170,288 research outputs found
Mimogonia paraensis Irmler 2010, sp. nov.
No full textMimogonia paraensis sp. nov. (Figs. 5a–c, 7B,D) Type locality. Brazil, Pará, 8 km E of Belém. Type material. HOLOTYPE: J, ‘ Brazil: Pará: 8 km E. Belém, Ananindéua, April 20-29, 1973, leg. R.T. Schuh’, (AMNH). Diagnosis. The eyes of M. paraensis are smaller and less prominent than in M. elytrata, M. longoelytrata, M. longipes sp. nov., and M. amazonica sp. nov. (the head width / pronotum width ratio of M. paraensis is 0.93). In this respect this species resembles M. unicolor Irmler, 1981, M adisi Irmler, 2007 and M. hangarthi Irmler, 2007. Having a small endophallus, the aedeagus of M. paraensis resembles that of M. tricolor Irmler, 1981; in contrast to M. tricolor the endophallus of M. paraensis is not distinctly spiral. Moreover, the elytral punctation of M. tricolor is distinctly finer and the microsculpture less distinct than in M. paraensis. Description. Length: 2.3 mm. Colouration: light reddish brown; legs and antennae yellow. Head 0.30 mm long, 0.40 mm wide; with slightly prominent eyes; with large setiferous punctures; punctation laterally dense, but with impunctate wide midline on disc; distance between punctures half as wide as or narrower than half width of diameter of punctures; microsculpture on punctate areas weak; surface shiny; surface of impunctate areas glossy. Antennae as long as head plus ¾ of pronotum; 2 nd antennomere oblong; 3 rd conical as long as 2 nd antennomere; antennomeres 4 to 10 increasing in width, but all more or less quadrate or slightly wider than long. Pronotum 0.35 mm long, 0.43 mm wide; with coarse setiferous punctures; distance between punctures on average ¼ as wide as diameter of punctures; with wide impunctate midline; netlike microsculpture weak; surface shiny. Elytra 0.50 mm long, 0.50 mm wide; with dense setiferous punctation; punctures large and coarse and partly coriaceous; distance between punctures less than ¼ of diameter of punctures; microsculpture more distinct than on pronotum; surface less shiny. Abdomen with distinctly finer punctation than those of pronotum and elytra, but with more distinct microsculpture; surface less shiny than that of elytra. Legs shorter than pronotum; mesotibia without sexual dimorphism. Median lobe of aedeagus with sinuous apical part and short endophallus with no distinct spirals. Etymology. The specific name paraensis is an adjective derived from the state of Pará, where this species was collectedPublished as part of Irmler, Ulrich, 2010, New species of the genera Mimogonus and Mimogonia (Coleoptera: Staphylinidae: Osoriinae) from the Neotropical Region, pp. 483-494 in Acta Entomologica Musei Nationalis Pragae 50 (2) on pages 490-491, DOI: 10.5281/zenodo.532597
Paratorchus tilli Irmler 2015, spec. nov.
No full textParatorchus tilli spec. nov. (Figs 14A–C, 18A, 19C) Type material: Holotype male: Mexico, Veracruz, 1 mi S Huatusco, 1344 m elevation, collected by Berlese, 02.08.1969, leg. S. & J. Peck (AMNH). Paratypes: Two females with same data as holotype (AMNH, UIC). Etymology: The specific name of this small species derived from the name of my little grand son Till. Description: Length: 2.8 mm. Colouration: light reddish brown; legs and antennae lighter brown. Head: 0.35 mm long, 0.49 mm wide; without eyes; fore-head approximately semicircular; anterior edge of clypeus even; punctation moderately dense and deep; on average, interstices between punctures at least as wide as diameter of punctures; on disc two times as wide as 1. Blind, abdomen not pubescent................................................................................................................. P. tilli spec. nov. - At least with few omatidia.................................................................................................................................................. 2 2. Abdomen pubescent........................................................................................................................................................... 3 - Abdomen not pubescent.................................................................................................................................................... 6 3. Sides of pronotum evenly narrowed from middle to posterior angles, posterior angles obtuse.................................................................................................................................................. P. brasiliensis (BERNHAUER & SCHUBERT, 1910) - Sides of pronotum nearly parallel in posterior half........................................................................................................ 4 diameter; laterally with few setae; setae extremely short; without microsculpture; between normal punctures with sparse micro-punctation; temples with deep netlike microsculpture. 4. Large species of at least 3.0 mm length, sides of pronotum parallel, not sinuate in front of posterior angles....... 5 - Small species of 2.5 least, sides of pronotum at least slightly sinuate in front of posterior angles................................................................................................................................................................................. P. panamae (IRMLER, 2005) 5. Sides of pronotum evenly rounded, pronotal punctation deeper and denser, interstices between punctures as wide as diameter of punctures..................................................................................................... P. bolivianus (IRMLER, 2005) - Sides of pronotum slightly sinuate in middle, pronotal punctation finer and sparser, interstices between punctures much wider than diameter of punctures....................................................................... P. columbiensis (IRMLER, 1987) 6. Large species of at least 4.0 mm length............................................................................... P. breviatus (IRMLER, 2007) - Smaller species of 2.5 to 2.8 mm length........................................................................................................................... 7 7. Pronotum deeply and densely punctate, surface polished without microsculpture, shiny.......................................... ........................................................................................................................................... P. chiriquensis (IRMLER, 2005) - Pronotum finely and sparsely punctate, surface with netlike microsculpture, matt............ P. chilensis (IRMLER, 2005) Antennae as long as head and half of pronotum combined; first antennomere thick; thicker than second oval and conical third antennomere; second and third antennomere equal in length and longer than following antennomeres; antennomeres four to eleven increasing in width; fourth longer than wide; tenth nearly twice as wide as long; surface polished and shiny. Pronotum: 0.51 mm long, 0.64 mm wide; widest in anterior third; slightly narrowed to anterior angles in convex curve; in posterior two third evenly narrowed to posterior angles; nearly parallel; posterior angles rectangular; lateral margin distinct; in dorsal aspect visible throughout its total length; at posterior angles with indistinct impression; punctation deeper and denser than on head; on average, interstices between punctures as wide as diameter of punctures; between coarse punctures with sparse micro-punctation; with irregular microsculpture; surface less shiny than on head. Elytra: 0.37 mm long, 0.67 mm wide; sides slightly widened to posterior angles; shoulders rectangular; posterior edge slightly emarginate; punctation still deeper and coarser than on pronotum; partly coriaceous; with coriaceous ground-sculpture; surface less shiny than on pronotum. Abdomen densely and deeply punctate; similar as on pronotum; dorsally punctures without setae; laterally and ventrally with short yellow setae; surface without microsculpture; polished and shiny. Aedeagus elongate; apical lobe smoothly rounded ending in acute apex; paramera long and sinuate; longer than apical lobe; endophallus with long and straight basal part and short spiral part at apex. Diagnosis: The species can be easily identified by the absence of eyes. All other species in the genus have at least few omatidia. The overall habitus resembles that of P. panamae, but P. panamae has at least 5 omatidia and the pronotum is more densely punctate.Published as part of Irmler, Ulrich, 2015, New Neotropical genera and species of the tribe Osoriini (Coleoptera: Staphylinidae: Osoriinae), pp. 173-196 in Beiträge Zur Entomologie = Contributions to Entomology 65 (1) on pages 185-186, DOI: 10.21248/contrib.entomol.65.1.173-196, http://zenodo.org/record/475384
Mimogonia hermani Irmler, 2007, n.sp.
No full textMimogonia hermani n.sp. Figs. 2 A–D, 5 C Type material. Holotype, male: BOLIVIA: Beni, Ilha Flores, Rio Itenez, 0 7.08. 1964, leg. J.K. Bouseman & L. Lussenhop (AMNH). Paratypes: BOLIVIA: 9 females with same data as holotype (AMNH, UIC). Diagnosis. The species resembles M. elytrata Irmler, 2005 in body size and colour of the elytra: yellow with darker posterior part. The eyes are smaller and less prominent, and the punctation of the elytra is finer and sparser than in M. elytrata (Fig. 5 C). Furthermore, the dark part of the elytra is smaller and the head is yellow, too, while it is dark in M. elytrata. Description. Body length 2.1 mm. Body colour yellow, posterior edge of elytra dark. Head 0.25 mm long, 0.40 mm wide; with eyes nearly twice as long as temples; setiferous punctation dense and distinct, distance between punctures on average half as wide as diameter of punctures; microsculpture reticulate; surface glossy, a space at base of antennae without punctures and microsculpture, surface glossy. Antennae with 1 st antennomere long, nearly as long as 2 nd and 3 rd antennomeres combined, 2 nd antennomere oblong, slightly longer than wide, 3 rd antennomere conical and not longer than 2 nd, 4 th antennomere wider than long and as wide as 3 rd, the following antennomeres increasing in width, distinctly wider than long (Fig. 2 B). Pronotum 0.35 mm long, 0.47 mm wide; widest close to anterior angles, slightly narrowed to large emargination in front of posterior angles, an indistinct longitudinal depression on each side of midline in front of posterior edge; setiferous punctation coarse and dense, distance between punctures on average half as wide as diameter of punctures, with reticulate microsculpture, surface glossy. Elytra 0.50 mm long, 0.45 mm wide; with dense setiferous punctation (Fig. 5 C), a larger setiferous puncture on the disc on each side of the suture, with distinct reticulate microsculpture, microsculpture much deeper than on head and pronotum, thus surface with weak gloss. Abdomen with finer setiferous punctation than on forebody, microsculpture as weak as on head and pronotum, surface glossy. Male mesotibia widest in the middle, weakly narrowed towards apex, at inner side, from widest part to apex with a comb of long setae (Fig. 2 C); posterior side covered with few setiferous punctures. Aedeagus with short hook-like structure at apex (Fig. 2 D). Etymology. The species is named in honour of the curator of AMNH, New York, Dr. Lee Herman who loaned this nice species for my studies.Published as part of Irmler, Ulrich, 2007, The genus Mimogonia (Coleoptera: Staphylinidae: Osoriinae) from the Neotropical region with descriptions of four new species, pp. 57-64 in Zootaxa 1651 on page 58, DOI: 10.5281/zenodo.17977
Pseudastenus amazonicus Busanello & Irmler & Caron 2020, sp. nov.
No full textPseudastenus amazonicus Irmler, sp. nov. Figs. 44, 53 Material examined. Holotype. Male, dissected, deposited in INPA, labeled as holotype by Irmler. “ Brazil: AM, Manaus, Ilha de Marchanteria (3°15’S, 59°58W), 27.7,1981, floatingm meadow, #BE50B, leg. J. Adis ”. Paratype: 1 female deposited in UIC. Female, labeled as paratype by Irmler. Brazil: Manaus, L. Janauarí, 3.1972, leg. U. Irmler Diagnosis. The species can be differentiated from the other species of Pseudastenus with elongate elytra by the totally light brown coloration of elytra and the only slightly darker coloration of the head. In contrast to all other Pseudastenus species, the apical sclerites of the aedeagus have several hooks pointing laterally and not only one hook pointing backwards (Fig 53). Description. Body length: 2.89 mm. Coloration: head light brown; pronotum lighter brown than head, nearly yellow; elytra slightly darker brown than pronotum, but lighter than head; abdomen brown; femurs brown, tibiae, tarsi and antennae yellow (Fig. 44). Head: 0.37 mm long, 0.41 mm wide; eyes moderately short; 0.24 times as long as total length of head; half as long as postocular length. Pronotum: 0.37 mm long; 0.46 mm wide; widest near anterior obtuse angles; apical and posterior margin curved; sides slightly convergentposteriad; with long black seta, each marking obtuse angles. Elytra: 0.46 mm long, 0.45 mm wide; humeral angles widely curved; wings developed; sides slightly curved, widest in the middle; posterior margin deeply emarginate; suture length only 0.9 times as long as lateral length; microtuberculate punctation larger than on head and pronotum; with loose pubescence; posterior margin with fringe of short black setae; Abdomen with normal punctation and denser pubescence than fore-body. Aedeagus 0.47 mm long; 4.50 times as long as apical width; widest shortly behind apex; anteriad divergent; sclerites 0.08 mm long; with broad base, narrowed in the middle and shortly widened to a bi-hooked apex (Fig. 53). Etymology. The species name derived from the Brazilian state of Amazonas, where it was collected. Geographical records. Pseudastenus amazonicus was found in Central Amazonia along the Rio Solimões, Amazonas (Brazil). Biological notes. The two specimens of P. amazonicus were collected in the inundation forest and floating meadows of the Rio Solimões.Published as part of Busanello, Dilson G. C., Irmler, Ulrich & Caron, Edilson, 2020, Revision of Pseudastenus Bernhauer, synonym with Xenasterides Newton and six new species (Coleoptera, Staphylinidae, Paederinae), pp. 139-154 in Zootaxa 4755 (1) on pages 149-151, DOI: 10.11646/zootaxa.4755.1.6, http://zenodo.org/record/372429
Pseudastenus oculatus Busanello & Irmler & Caron 2020, sp. nov.
No full textPseudastenus oculatus Irmler, sp. nov. Figs. 43, 52 Material examined. Holotype. Male, dissected. Deposited in INPA, labeled as holotype by Irmler. Brazil, Manaus, Lg. Janauarí, 03.1972, leg. U. Irmler. Paratypes. 1 female, labeled as paratype by Irmler. Brazil, AM, Rio Solimões, Ilha Marchanteria (59°58’W, 3°15’S), Várzea, 4.2.1981, leg. J. Adis (UIC); 1 female, Brazil, São Paulo de Olivença, Lg. Amataura, 8.1961, leg. Fittkau (UIC). Diagnosis. P. oculatus mostly resembles P. latus in the size of the eyes and coloration but differs by the shape of sclerites of the aedeagus. Description. Body length: 3.35 mm. Coloration: head dark brown with clypeus yellowish; pronotum light brown to yellowish; elytra dark brown, nearly black in anterior half, more yellowish in posterior half; abdomen dark brown to nearly black with posterior margin of segments yellowish; legs and antennae yellow. Head 0.43 mm long, 0.48 mm wide; eyes large and prominent; 0.33 times as long as total length of head; 0.87 times as long as postocular length; sides approximately parallel; posterior margin straight; slightly depressed on central vertex in front of neck. Pronotum 0.43 mm long, 0.48 mm wide; widest close to anterior angles; anterior margin slightly curved; posterior margin less curved than anterior margin; sides converging posteriad Elytra 0.57 mm long, 0.55 mm wide; sides slightly convexly curved; widest in the middle; humeral angles rounded and obtuse, but conspicuously developed; hind wings developed; posterior angles nearly rectangular; posterior margin triangularly emarginate; suture 0.82 times as long as lateral side; microtuberculate punctation larger than on head and pronotum; with yellow pubescence pointing posteriad; posterior edge with fringe of short dark setae; surface matt. Abdomen with dense punctation; long pubescence pointing posteriad. Aedeagus elongate; 0.51 mm long; approximately four times as long as wide; subparallel; slightly convergent to apex; sclerites with broad base and apical hook; short, 0.11 mm long (Fig. 52). Etymology. The species name derives from the Latin word “oculatus” meaning concerning eyes, and refers to the large eyes. Geographical records. The specimens are collected from different places of the Várzea of the Rio Solimões, Amazonas (Brazil). Biological notes. P. oculatus was collected from the litter layer of Várzea forests.Published as part of Busanello, Dilson G. C., Irmler, Ulrich & Caron, Edilson, 2020, Revision of Pseudastenus Bernhauer, synonym with Xenasterides Newton and six new species (Coleoptera, Staphylinidae, Paederinae), pp. 139-154 in Zootaxa 4755 (1) on page 149, DOI: 10.11646/zootaxa.4755.1.6, http://zenodo.org/record/372429
Thoracophorus struyvei Irmler, 2015, n. sp.
No full textThoracophorus struyvei n. sp. Figs. 4 A, B, C, 10 E Type material. HOLOTYPE. male, French Guyana: Coralie (52 ° 21.38 'W, 4 ° 30.41 'N), collected by car-net, 15.11. 2011, leg. T. Struyve (UIC). PARATYPES: 2 males with same data as holotype (1 UIC, 1 TSC). Diagnosis. Regarding the shape of swellings, impressions, and elytral carinae T. struyvei n. sp. resembles T. exilis (Erichson, 1840) more than T. perplexus n. sp.. T. struyvei n. sp. can be mainly differentiated by the characteristic shape of the paramera. They are slightly longer than the central lobe and have a large asymmetric apical plate on which several sensillae occur. The apical lobe is shorter than in T. perplexus n. sp., T. exilis (Erichson, 1840) and T. proximus Irmler, 1985. Regarding the shape of the temples, T. struyvei n. sp. resembles T. exilis (Erichson, 1840). They are slightly less rounded than in T. perplexus n. sp. and less obtuse than in T. proximus Irmler, 1985. Description. Length: 1.8 mm. Colouration: orange; vertex of head and elytra except small anterior margin black; legs and antennae yellow. Head: 0.23 mm long, 0.30 mm wide; eyes large; prominent; nearly semicircular; temples short; one fourth as long as eyes; narrowed to distinctly separated neck in short convex curve; posterior angles of temples 119 °; sides in front of eyes shortly parallel; clypeus margined continued posteriad to posterior edge of eyes; nearly semicircular; obtusely angulate in centre; pair of central swellings on vertex indistinct, without punctation; isodiametric microsculpture deep and dense; surface matte. Antennae as long as head and half of pronotum combined; clavate; first and second antennomeres thicker than four following antennomeres; first antennomere nearly rectangular; second oval and as thick as first; conical third antennomere slightly shorter than second; fourth to sixth antennomeres as wide as third, but approximately quadrate; following antennomeres wider than long; eighth antennomere as wide as first, ninth and tenth antennomeres wider than first; tenth antennomere nearly twice as wide as long. Pronotum: 0.25 mm long, 0.32 mm wide; widest at middle; slightly convergent to anterior angle; narrowed to posterior angles in concave curve; sides shortly in front of posterior angles nearly parallel, posterior angles nearly rectangular; central impression with indistinct central swelling; longitudinal lateral impression more distinct; posterior edge with white short bristles; without punctation; isodiametric microsculpture deep and dense; surface matte. Elytra: 0.38 mm long, 0.38 mm wide; sides parallel; shoulders and posterior angles shortly rounded; three indistinct carinae on each side of suture; without punctation; isodiametric microsculpture deep and dense; surface matte. Abdomen parallel; anterior segments III to V with weak transverse impression; with few partly granulate setiferous punctures; isodiametric microsculpture dense, but distinctly weaker than on fore-body; surface glossier than that of fore-body.. Aedeagus smoothly curved; apical lobe short; paramera slightly projecting apex of central lobe; paramera widened at apex to triangular lobe; triangular lobe with rounded angles fixed at one side; apical lobe of paramera with numerous sensillae. Etymology. The specific name honours the collector of the species, Tim Struyve.Published as part of Irmler, Ulrich, 2015, Four new species of the genus Thoracophorus Motschulsky, 1857 for the Neotropical region (Coleoptera: Staphylinidae: Osoriinae), pp. 431-444 in Zootaxa 4039 (3) on pages 441-442, DOI: 10.11646/zootaxa.4039.3.3, http://zenodo.org/record/23852
Mimogonia longipes Irmler 2010, sp. nov.
No full textMimogonia longipes sp. nov. (Figs. 3 a–c, 6 D) Type locality. Brazil, Pará, 14 km S of Vijia. Type material. HOLOTYPE: J, ʻBrazil: Pará: 14 km S. Vijia, May 30, 1973, leg. R.T. Schuh, collected in soil litter layer in “campo de caimbé”ʼ (AMNH). PARATYPES: 8 JJ 10 ♀♀, same data as in the holotype (AMNH, UIC). Diagnosis. This species can be easily distinguished from the other species of the genus by the extremely large and prominent eyes. The head width / pronotum width ratio is the greatest of all known Mimogonia species (1.18). The head thus resembles that of a small Stenus species. Large eyes are also found in M. elytrata Irmler, 2005 from French Guiana and M. longoelytrata Irmler, 2005 from Peru, but the head width / pronotum width ratios are smaller in these species, ranging only between 1.00 and 1.09. Furthermore, antennae of M. elytrata are shorter than length of the head and the pronotum combined, whereas they are longer than this distance in M. longoelytrata and M. longipes sp. nov. Hind legs of M. longipes are relatively longer than those of M. longoelytrata. The metatibia of M. longipes is distinctly longer than the length of the anterior three visible abdominal segments combined, whereas metatibia of M. longoelytrata is only as long as the length of the anterior three abdominal segments combined. The punctation of M. elytrata and M. longoelytrata is denser, in particular that of the head. Thus, the surface of the fore-body is matt in appearance in M. elytrata and M. longoelytrata, whereas it is shiny in M. longipes. Description. Length: 2.2 mm. Colouration: yellow; head darker on disc than light yellow clypeus and pronotum also darker reddish than yellow anterior ⅔ of elytra; posterior third of elytra brown; 5 th and 6 th visible abdominal segments darker than proceeding yellow segments; legs and antennae yellow. Head 0.30 mm long, 0.47 mm wide; eyes distinctly prominent and large; more than four times as long as short temples; sides in front of eyes strongly narrowed to anterior edge of clypeus; punctation irregular and with wide space in centre of disc impunctate; clypeus also without punctures; setiferous punctures large and deep; distance between punctures on average ¼ as wide as diameter of punctures; surface without microsculpture and shiny. Antennae as long as length of head and pronotum combined; 2 nd antennomere longitudinally oval; longer than conical 3 rd antennomere; 4 th antennomere quadrate and as wide as preceding antennomere; following antennomeres wider and increasing in width; penultimate antennomere slightly wider than long. Pronotum 0.35 mm long, 0.40 mm wide; lateral margins of anterior half parallel; deeply emarginate anterior to posterior angles; setiferous punctures dense and deep; distance between punctures on average half as wide as diameter of punctures; with wide longitudinal impunctate midline; surface without microsculpture, shiny. Elytra 0.57 mm long, 0.50 mm wide; with large coriaceous setiferous punctation; surface with weak irregular microsculpture; surface matt. Abdomen with setiferous punctation as deep and large as that of pronotum; with weak microsculpture; surface slightly shiny. Legs long; tibiae slightly longer than length of anterior visibile 3 segments combined; mesotibia with long spines on outer edge and without emargination or comb on inner edge. Median lobe of aedeagus with apical part forming a rectangular angle to the basal part; paramera as long as apical part of median lobe; endophallus with four torsions. Etymology. The specific name longipes (Latin) is a noun in apposition and refers to the long legs of the species.Published as part of Irmler, Ulrich, 2010, New species of the genera Mimogonus and Mimogonia (Coleoptera: Staphylinidae: Osoriinae) from the Neotropical Region, pp. 483-494 in Acta Entomologica Musei Nationalis Pragae 50 (2) on pages 487-488, DOI: 10.5281/zenodo.532597
Osoriosetus hanagarthi Irmler 2015, spec. nov.
No full textOsoriosetus hanagarthi spec. nov. (Figs 11A–C, 17A) Type material: Holotype male: Peru, Huanuco, Panguana (74°56'W, 9°37'S), Cocha, May 1975, leg. W. Hanagarth (UIC). Paratypes: Panguana (74°56'W, 9°37'S), river margin, female, 05.01.1976, leg. W. Hanagarth (UIC). Etymology: The species is named in honour of my dear colleague Dr. Werner Hanagarth, who unfortunately passed away too early. Among the extensive material collected by him in Panguana, this interesting species was found, which could not be integrated in one of the described genera. Description: Length, 5.3 mm; colouration, black; legs and antennae light brown. Head: 0.67 mm long, 0.90 mm wide; eyes small, but prominent; temples nearly three times longer than eyes; sides of fore-head narrowed to anterior angles in short concave curve; anterior edge of clypeus even; slightly convex; setiferous punctation coarse and dense; on average, interstices between punctures less than half of diameter of punctures; setae short; not much longer than one interstice between punctures; small area at antennae and large transverse area on neck impunctate; on punctate areas with isodiametric deep microsculpture; surface matt; impunctate areas shiny. 1. Eyes thick and prominent; semicircular......................................................................................... O. politum spec. nov. - Eyes not prominent............................................................................................................................................................. 2 2. Posterior angles of pronotum widely rounded; elytra wider than long....................................................................... 3 - Posterior angles of pronotum nearly rectangular; elytra longer than wide.................... O. schwarzi NOTMAN, 1925 3. Front of clypeus angulate....................................................................................... O. exalatum (BLACKWELDER, 1943) - Front of clypeus rounded..................................................................................... O. microptera (BLACKWELDER, 1943)Published as part of Irmler, Ulrich, 2015, New Neotropical genera and species of the tribe Osoriini (Coleoptera: Staphylinidae: Osoriinae), pp. 173-196 in Beiträge Zur Entomologie = Contributions to Entomology 65 (1) on page 182, DOI: 10.21248/contrib.entomol.65.1.173-196, http://zenodo.org/record/475384
Diochus tricolor Irmler 2017, spec. nov.
No full textDiochus tricolor spec. nov. urn:lsid:zoobank.org:act: 5A551701-6B51-4659-B6A6-D2CBF83EA095 Figs 13A–C; 39C, 43B Type material: male, Holotype: Brazil: Mato Grosso, 40 km S Poconé, Rio Clarinho (51°43.37'W, 16°36.38'S), decay fruit, 15.3.2013, leg. U. Irmler (UFMT). Paratypes: 1 male, 1 female, with same data as holotype (UIC); Peru: Madre de Dios, Dept., Tambopata, litter at swamp edge, 4 females, 28.10.1982, leg. L.E. Watrous & G. Mazurek (FMNH). Diagnosis: The species is characterised by the black head in contrast to the light yellow pronotum and the slightly darker elytra. It is the smallest species of the group. It can be separated from the similarly small D. antennalis by the colouration: D. tricolor with black head, D. antennalis totally light yellow. The funnel-like widening of the basal inner duct and the presence of an apical filamentous duct show that it belongs to the D. inornatus-group. In contrast to the slightly apically widened paramere of D. antennalis, the paramere of D. tricolor is more slender. Description: Length: 2.9 mm. Colouration: head black; pronotum yellow, elytra yellowish brown; abdomen brown; legs and antennomeres one to three yellow; four to eleven dark. Head: 0.43 mm long, 0.36 mm wide; eyes slightly prominent; temples twice as long as eyes; EL: HL = 0.25; temples distinctly divergent posteriad; PW: EW = 1.24; neck one third as wide as head at posterior angles; posterior angles shortly rounded; posterior margin slightly convex; setiferous punctation sparse; on vertex, four setiferous punctures in convergent line adjacent to impunctate midline; laterad two additional supraocular lines of setiferous punctures; temples and posterior margin more densely punctate; without microsculpture; surface polished. Antennae slightly longer than head; first antennomere elongate; slightly longer than two following antennomeres; conical second and third antennomere elongate; approximately twice as long as apical width; fourth antennomere slightly longer than wide; width of following antennomeres slightly increasing; fifth antennomere slightly wider than long; tenth antennomere 1.5 times as wide as long; all antennomeres pubescent with apical setae. Pronotum: 0.48 mm long, 0.39 mm wide; sides nearly parallel; anterior angles widely rounded; anterior margin semi-circular; posterior angles shortly rounded; lateral margin fine; in dorsal aspect, visible in posterior half; setiferous punctation sparse; along wide impunctate midline three pairs of setiferous punctures; interstice between anterior pair twice as wide as interstices between two posterior pairs; few additional punctures laterad; several punctures with long setae along lateral margin; without microsculpture; surface polished. Elytra: 0.51 mm long, 0.54 mm wide; sides slightly divergent to posterior angles; at posterior angles 1.3 times as wide as at shoulders; shoulders obtuse; posterior margin triangularly emarginate; setiferous punctation in irregular lines of fife to six punctures; three lines on disc; additional line along lateral margin. Abdomen densely pubescent. Aedeagus moderately broad; seminal vesical half as long as central lobe; basal inner duct looped; ending in funnel-like widening; apical inner duct shortly coiled; paramere slender; slightly shorter than central lobe; slightly widened at apex to small circular plate; at apex with four long setae; three sensillae at central shaft. Spermatheca: 0.21 mm long, 0.12 mm wide; bursa copulatrix in asymmetric position to coiled duct; coiled duct with few irregular coils. Etymology: The species name derived from the same Latin word meaning three colours and refers to the threecoloured fore-body.Published as part of Irmler, Ulrich, 2017, A review of the Neotropical genus Diochus ERICHSON, 1840 (Coleoptera: Staphylinidae: Staphylininae), pp. 1-62 in Beiträge Zur Entomologie = Contributions to Entomology 67 (1) on pages 18-19, DOI: 10.21248/contrib.entomol.67.1.001-062, http://zenodo.org/record/521252
Osoriellus tuxtlae Irmler 2014, n. sp.
No full textOsoriellus tuxtlae n. sp. (Figs 66 A-C, 98B) Type material: Holotype, male: Mexico: Chiapas, Tenejapa ca. 30 mi. ENE Tuxtla Gutierrez, 7000 ft. (92°22'W, 16°50'N), Dec. 31, 1972, leg. H. Frania (AMNH). Paratypes: Mexico: 4 females, 4 males, with same data as holotype (AMNH, UIC); San Louis Potosi, Sierra de la Abra, Sotano de la Tinaja, flood debris on mud slope, 1500 ft. from entrance, female, Feb. 18, 1970, leg. J.A.L. Cook (AMNH). Diagnosis: The species can be differentiated from the species similar in size and absence of pronotal microsculpture, i.e. O. boliviensis, O. parumpunctatus, and O. minor, by the dense and coarse punctation. In O. tuxtlae the interstices are narrower than half of diameter of punctures, wheras in the other species the interstices between punctures are much wider than the diameter of punctures. Description: Length: 4.6 mm. Colouration: Dark reddish to brown; head and pronotum brown; elytra lighter red; anterior abdominal segments light red; posterior segments dark red; legs and antennae yellow. Head: 0.60 mm long, 0.82 mm wide; eyes not prominent; as long as temples; sides of fore-head sinuate; sides of clypeus approximately parallel; clypeal angles with granules; sparsely and deeply punctate with setiferous punctures; setae pointing to middle; impunctate areas at base of antennae and on central vertex; supraocular area with denser punctation than vertex; without microsculpture; surface shiny and polished. Antennae with second antennomere oblong and thicker than third; third antennomere conical, narrower and shorter than second; following 3 antennomeres wider than long, but not wider than third antennomere; antennomere 7 quadrate; antennomeres 8 to 10 wider than long and distinctly wider than preceding antennomeres.Published as part of Irmler, Ulrich, 2014, The Neotropical species of the genus Osoriellus FAGEL, 1959 (Coleoptera: Staphylinidae: Osoriinae), pp. 231-354 in Beiträge Zur Entomologie = Contributions to Entomology 64 (2) on page 291, DOI: 10.21248/contrib.entomol.64.2.231-354, http://zenodo.org/record/546170
- …
