1,513 research outputs found
Interocoris mexicanus Polhemus & Polhemus 2008, comb. nov.
No full textInterocoris mexicanus (Usinger, 1935), comb. nov. Heleocoris mexicanus Usinger, 1935: 133. Type locality: Temascaltepec, Mexico. Holotype in CAS. Heleocoris (Interocoris) mexicanus: LA RIVERS (1974): 11. Material examined. MEXICO: CHIAPAS: 1 J, W. of Rizo de Oro, CL 1331, 14.i.1970. GUERRERO: 1 ♀, Terreros, km 31 on Mexico Hwy. 134, NE of Ixtapa, CL 1896, 29.i.1985. JALISCO: 1 J, nr. Atentique, CL 740, 12.v.1975; 1 J 3 ♀♀, S. of Mismaloya, CL 733, 9.vi.1975; 1 J, S. of Mismaloya, CL 734, 9.vi.1975. NAYARIT: W. of Compostela, CL 730, 8.vi.1975. OAXACA: 7 JJ 8 ♀♀ 5 nymphs, 7 mi. S. of Valle Nacional, CL 508, 5.i.1971, J. T. & M. S. Polhemus. SONORA: 1 ♀, La Aduana, CL 1212, 21.iii.1967; 3 JJ 1 ♀, canyon 17 mi. S. of Bacanora, 25.iv.1982, D. A. Polhemus (all in JTPC, all collected by J. T. Polhemus unless otherwise noted). Discussion. The original type series was collected from mud along the margins of streams (USINGER 1935). Our specimens were almost all collected from hygropetric habitats, such as cracks in vertical wet rock faces.Published as part of Polhemus, John T. & Polhemus, Dan A., 2008, Intraspecific morphological polymorphism in Naucoridae (Hemiptera: Heteroptera) with notes on nomenclature and synonymy, pp. 289-298 in Acta Entomologica Musei Nationalis Pragae 48 (2) on page 296, DOI: 10.5281/zenodo.534094
Rupisalda J. Polhemus 1985
No full textGenus Rupisalda J. Polhemus, 1985 Discussion. — Species in the genus Rupisalda were transferred from Saldula by J. Polhemus (1985), and may be recognised on the basis of a the strongly raised callus on the pronotum set off by a row of pits, the forewing membrane bearing four cells of approximately equal length, and the simple structure of the hypocostal ridge (compare Figs. 12–14). They also preferentially inhabit rheocrenes and spray-wetted bedrock faces adjacent to waterfalls, rather than the horizontal littoral habitats preferred by Saldula species.Published as part of Polhemus, John T. & Polhemus, Dan A., 2012, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Viii. Leptopodomorpha, Families Saldidae, Leptopodidae, And Omaniidae, pp. 329-341 in Raffles Bulletin of Zoology 60 (2) on page 336, DOI: 10.5281/zenodo.534809
Mesovelia melanesica J. Polhemus & D. Polhemus 2000
No full textMesovelia melanesica J. Polhemus & D. Polhemus, 2000 (Figs. 10 A–B) 2000. Mesovelia melanesica J. Polhemus & D. Polhemus, J. New York Entomol. Soc., 108(3–4), 211. Material examined. PAPUA NEW GUINEA, NEW GUINEA, Southern Highlands Province, 13 apt. ♂, 11 apt. ♀, 3 immatures, imponded roadside stream at Moro oil exploration camp, 840 m a.s.l., 6.35694 0 S, 143.2367 0 E, water temp. 25° C., 24.iii.1994, 14:00–15:00 hrs., CL 7024, Coll. D. A. Polhemus (BPBM). INDONESIA, NEW GUINEA, Irian Jaya Province [= Papua Province], 1 apt. ♂, 1 apt. ♀, tributary to Tirawiwa River, 4.5 km. N. of PTFI Siewa exploration camp along old logging road, 55 m a.s.l., 3.00972 0 S, 136.3494 0 E, water temp. 26° C., 12.iv.1998, 09:30–12:30 hrs., CL 7095, D. D. A. Polhemus (BPBM). Comparative notes. Mesovelia melanesica conforms to our definition of the M. horvathi species complex, possessing character states definitive for the group including paired, sublateral setal tufts on the terminal male abdomen (Fig. 10A); a strongly bent male paramere (Fig. 10B); and an apicolateral excavation on the abdominal segment VIII of male (Fig. 10A). The species was originally described from a series of 9 specimens taken on Biak Island, off northwestern New Guinea (J. Polhemus & D. Polhemus 2000), with paratypes from other scattered locations on New Guinea proper, both north and south of the central mountains, but excluding the Papuan Peninsula. Although widespread, this species is generally localized and uncommon, being far less regularly encountered in New Guinea than is M. subvittata, with which it is syntopic. It can be easily distinguished from this latter species by its color pattern (J. Polhemus & D. Polhemus 2000), and by the much smaller number of spinelike setae (only 3–4) in each of the paired tufts on the male terminal abdomen (segment VIII), with the bases of these tufts being covered by the posterior margin of segment VII. Ecologically, M. melanesica seems to prefer lentic habitats, including rain forest pools, sago swamps, and imponded sections of streams between 0 and 850 m elevation. Distribution. Australasian Region: Indonesia, Papua New Guinea (J. Polhemus & D. Polhemus 2000).Published as part of Jehamalar, E. Eyarin, Chandra, Kailash & Polhemus, Dan A., 2019, Review of the Mesovelia horvathi species complex (Hemiptera: Gerromorpha: Mesoveliidae), with the description of seven new species from India, pp. 471-496 in Zootaxa 4651 (3) on page 491, DOI: 10.11646/zootaxa.4651.3.4, http://zenodo.org/record/336337
Prohydrometra gagnei J. Polhemus & D. Polhemus 2022, new combination
No full textProhydrometra gagnei (J. Polhemus & D. Polhemus, 1995) new combination Figs. 9, 10, 19, 20, 27–29 Hydrometra gagnei J. Polhemus & D. Polhemus, 1995a: 2. Apterous male. Length 6.80, width 0.50. Color. Ground color brown to blackish-brown; abdominal mediotergites light-brown medially, matte. Head heavily tinged with blackish except at base. Thorax anteriorly and medially light colored dorsally; each laterotergite with light area anteriorly. Venter of thorax and abdomen dark-brown. Legs light-brown, antennae light-brown to brown; coxae and trochanters mostly light-brown. Structure. Very similar to the female previously described, except somewhat narrower, and with abdominal sternum VII modified. Acetabula lacking pits. Venter without black denticles. Proportions of legs similar to the female previously described. All legs with bristly setae, including on coxae, longer basally, but distally with setae about as long as width of segment; setae more pronounced in male than in female. First abdominal segment short, transverse, clearly delineated by a suture posteriorly. Mediotergites longer than wide. Mediotergites VII and VII thickly set with moderate length semi-erect setae; abdominal sternum VII with two large, erect curved spines, set close together, arising near the anterior margin (Figs. 19, 20); segment VIII cylindrical, unmodified, without distal process. Material examined (all micropterous). SOCIETY ISLANDS, Tahiti: 1 male, Tahiti Nui, Mt. Marau summit, 1400 m, 20 September 1977, J. Gourves (holotype, BPBM); 2 females, Tahiti Nui, Mt Marau, fern gulley along road to summit, 1380 m, 17°36'28"S, 149°32'09"W, 10 September 2006, CL 7498, D. A. Polhemus (USNM); 3 males, 8 females, same data as preceding, 2 September 2007, CL 7498, D. A. Polhemus and J. T. Polhemus (BPBM, USNM); 6 males, 7 females, Tahiti Nui, Mt. Mauru, trail to summit between Pylon 3 and Pylon 4, 1030 m, 17°38'04"S, 149°22'04"W, 6 September 2006, 13:30–15:00 hrs., CL 7486, D. A. Polhemus (BPBM, USNM); 3 males, 5 females, same locality and date as preceding but J. K. Liebherr (CUIC). Distribution. French Polynesia, Society Islands, endemic to the island of Tahiti, on Tahiti Nui (Fig. 29). Discussion. Prohydrometra gagnei may be recognized among its congeners by the pair of large, posteriorlycurved, sclerotized processes on male abdominal venrtite VII, which arise near the anterior margin of the segment and are set moderately close together. This character state is similar to that seen in P. moorea, but in that species the processes are somewhat removed from the anterior margin of the ventrite, and set further apart (compare Figs. 19–21). Certain specimens of P. gagnei from Mt. Mauru, in eastern Tahiti Nui, exhibit an atypical yellowish-brown coloration (Fig. 20). At first it was thought that these might represent a different species, but because they are morphologically similar to the other specimens in hand, it is concluded that this color morph simply represents a degree of intraspecific variation. Ecological notes. Our knowledge of the habits of P. gagnei is based primarily on many hours of intensive collecting activity on Mt. Marau, a summit above Papeete which can be reached by a road to a radio tower, and indicates that the species is similar in its habitat preferences to the species occupying Mt. Tohiea on Moorea. The majority of the captures have come by fogging vertical exposures of dry Dicranopteris fern fronds along the margins of headwater gulches or upland trails (Fig. 27). Only two specimens have been taken by beating, and both of these were obtained by pushing a net deep inside Dicranopteris fern banks so that it penetrated the dry fronds of the interior, then beating on the overlying fern mass. This apparent preference for masses of dry Dicranopteris fronds is also shared by certain micropterous Nabis species (N. tahitiensis D. Polhemus, 2010, N. orohena D. Polhemus, 2010, N. tangaroa D. Polhemus, 2010, N. tiki D. Polhemus, 2010) with which P. gagnei is frequently syntopic. An additional series of P. gagnei was taken from Dicranopteris fern banks on Mt. Mauru, a very wet mountain lying in the eastern section of Tahiti Iti. The habits of the species at this locality were very similar to those observed at Mt. Marau above Papeete, with the specimens being obtained by fogging dense fern banks along the trail (Fig. 28). The captures of P. gagnei at the type-locality on Mt. Marau have consisted largely of females, and it was only after a fourth visit to the summit area of Mt. Marau in 2007 that the males of the species were finally obtained there. The capture ratio of sexes to date at this site has been approximately six females to one male. By contrast, other collections of this species on Mt. Mauru, further to the east, have produced roughly similar numbers of males and females. It is not clear if males of P. gagnei at Mt. Marau live in slightly different microhabitats that make them less amenable than females to collection by fogging and beating, the two primary methods used to date.Published as part of Polhemus, Dan A., 2022, Two new genera and six new species of Terrestrial Hydrometridae (Hemiptera: Heteroptera) from French Polynesia, pp. 69-98 in Zootaxa 5190 (1) on pages 88-90, DOI: 10.11646/zootaxa.5190.1.3, http://zenodo.org/record/711984
Amemboides perlatus Polhemus & Andersen 1984
No full textAmemboides perlatus (Polhemus & Andersen, 1984) (FigS. 1, 6, 11, 16, 21, 26, 31, 36, 37, 46, 55) Amemboa (Amemboides) perlata Polhemus & Andersen, 1984: 100. Amemboides perlatus (Polhemus & Andersen, 1984); Tran & Polhemus 2009: 51. Material examined. CHINA, Guangdong Prov.: 2 apterouS maleS, 1 apterouS female, Zhaoqing city, DinghuShan Nature ReServe (23°09'N, 112°31'E), Laoding, 23 VIII 2011, coll. Zhen Ye (NKUM). Remarks. A. perlatus waS reported in India, Thailand (PolhemuS & AnderSen 1984), LaoS and Vietnam (Zettel et al. 2007, Zettel 1998, Tran & PolhemuS 2009). PreSented here iS the firSt record of A. perlatus from China. Amemboides perlatus can be eaSily diStinguiShed from congenerS occurring in China by the diStinctive Shape of the male paramereS (Fig. 37), the relatively Small Size of abdominal Segment VIII and the pygophore (FigS. 16, 21, 26, 31), and the diStinctly Short proceSS on each Side of the proctiger (Fig. 36). ThiS SpecieS iS widely diStributed in the Oriental region (China, India, LaoS, Thailand and Vietnam).Published as part of Ye, Zhen, Polhemus, Dan A. & Bu, Wenjun, 2017, Review of the genus Amemboides Polhemus & Andersen, 1984 (Hemiptera: Heteroptera: Gerridae) from China, with description of a new species, pp. 401-410 in Zootaxa 4286 (3) on page 402, DOI: 10.11646/zootaxa.4286.3.7, http://zenodo.org/record/82861
Prohydrometra D. Polhemus 2022
No full textKey to the species of Prohydrometra This key is based primarily on male specimens, except for P. englundi for which the male is unknown. 1. Head and thorax bearing numerous long, erect, pale setae (Figs. 12, 13); male unknown; Raiatea.......... P. englundi n. sp. - Head and thorax lacking long, erect pale setae, bearing only short, dark, bristly setae; Raiatea, Moorea or Tahiti.......... 2 2. Male abdominal sternum VII bearing paired lines or patches of black bristles, lacking sclerotized or hook-like processes (Figs. 22–24).............................................................................................. 3 - Male abdominal sternum VII bearing paired sclerotized and hook-like processes, which may in some cases possess distal bristles (Figs. 19–21).................................................................................. 5 3. Patches of bristle-like setae on male abdominal sternum VII small and set close together (Fig. 22); Tahiti (Tahiti Iti)............................................................................................... P. teatara n. sp. - Patches of bristle-like setae on male abdominal sternum VII larger and more widely separated (Figs. 23, 24); Raiatea or Moorea..............................................................................................4 4. Patches of bristle-like setae on male abdominal sternum VII elongate, well removed from anterior margin (Fig. 23); Moorea.......................................................................................... P. tohiea n. sp. - Patches of bristle-like setae on male abdominal sternum VII short and triangular, arising closer to anterior margin (Fig. 24); Raiatea............................................................................. P. johnpolhemi n. sp. 5 Paired processes on male abdominal sternum VII widely separated, with bristles at tips (Fig. 21); Moorea... P. moorea n. sp. - Paired processes on male abdominal sternum VII set closer together, lacking bristles at tips (Figs. 19, 20); Tahiti................................................................................. P. gagnei J. Polhemus & D. PolhemusPublished as part of Polhemus, Dan A., 2022, Two new genera and six new species of Terrestrial Hydrometridae (Hemiptera: Heteroptera) from French Polynesia, pp. 69-98 in Zootaxa 5190 (1) on page 78, DOI: 10.11646/zootaxa.5190.1.3, http://zenodo.org/record/711984
Prohydrometra D. Polhemus 2022, n. gen.
No full textProhydrometra D. Polhemus n. gen. Figs. 9–29 Description. Body small for family, narrow (see J. Polhemus & D. Polhemus 1995a, Fig 1); body without black spicules; body lengths 4.15–7.20. Color: Ground blackish-brown to yellowish-brown; legs slightly paler; abdominal laterotergites often with faintly suggested paler areas on anterior halves. Structural characters: Head relatively long, anteocular portion slightly longer than postocular portion (Figs. 10, 12), ratio varying from 1.33/1.00 to 1.59/1.00; eyes small, with dorsal eye width subequal to or less than width of interocular space (Figs. 10, 12); labium long, reaching onto prosternum; antennae long, combined length equal to nearly that of body, slender, antennomere II longer than antennomere I, antennomere III over 5 times as long as antennomere II (Fig. 11), antennomere IV about 3 times as long as antennomere II. Thorax widened posteriorly; pronotal lobe short, extending posteriorly over mesonotum, metanotum exposed, without any trace of wing pads; acetabula without pits. Legs slender, moderately long, combined lengths of hind leg segments about 1.3 times as long as body; foreto-middle versus middle-to-hind coxal spacing unequal, ratio varying from 1.00/1.22 to 1.00/1.90 (Figs. 9, 13); pretarsus with both dorsal and ventral arcuate arolia, parempodia long, setae-like. Abdomen with segment I clearly delineated, short, rectangular; abdominal mediotergites II–VII rectangular, slightly longer than wide, length to width ratio about 1.1/1.0; female abdominal sternum VII and tergum VIII without caudal processes; male abdominal sternum VII bearing paired sclerotized processes or modified setal patches to either side of longitudinal midline (Figs. 19–24). Type-species. Hydrometra gagnei J. Polhemus & D. Polhemus, 1995a. Etymology. The generic name Prohydrometra is derived from pro-, L., before, and Hydrometra, water measurer. Gender feminine. Distribution. French Polynesia, Society Islands (Moorea, Raiatea, Tahiti). Discussion. Prohydrometra possesses a set of character states that are intermediate between the putatively plesiomorphic conditions seen in Marquesametra, and the more modified states seen in Hydrometra. The abdomen is longer than in Marquesametra, in which the mediotergites are quadrate and equilateral, but shorter than in Hydrometra, with abdominal mediotergites III–VI weakly rectangular, being slightly longer than wide, but not nearly so elongate as in Hydrometra. The hind coxae are slightly more posteriorly displaced to varying degrees compared to the condition seen in Marquesametra, where the spacing is nearly equal (compare Figs. 3, 9, 13), but still far less asymmetrical than the condition seen in Hydrometra. The legs are longer longer than in Marquesametra, with the combined length of the hind leg slightly longer than the body, but shorter and less thread-like than in Hydrometra species. Similar to Marquesametra, but in contrast to Hydrometra, the body lacks both black spicules ventrally, and pits on the acetabula. The posterior pair of cephalic trichobothria is set on low tubercles, similar to Hydrometra species and the three endemic Marquesan genera, and the eyes are somewhat reduced, a character state also prevailing in the endemic Marquesan genera. This suite of characters, as well as those discussed previously under Marquesametra, serve to separate this genus from others in the family. In addition, the members of this genus have a diagnostic antennal morphology, with the combined lengths of the antennomeres being subequal to that of the body, due to a highly elongated antennomere III, which is five times the length of antennomere II (Fig. 11).Published as part of Polhemus, Dan A., 2022, Two new genera and six new species of Terrestrial Hydrometridae (Hemiptera: Heteroptera) from French Polynesia, pp. 69-98 in Zootaxa 5190 (1) on page 76, DOI: 10.11646/zootaxa.5190.1.3, http://zenodo.org/record/711984
Enithares papua Polhemus 2020, new species
No full textEnithares papua new species (Figs. 7, 20, 22, 25, 26) Type material examined. Holotype, male (dissected), PAPUA NEW GUINEA, Central Prov., Yaniwe River and small tributary streamlets at Tekadu, 300 m., water temp. 24° C., 21 January 2001, 12:00–16:30 hrs., 07°40′36′′S, 146°33′05′′E, CL 7157, D. A. Polhemus (BPBM). Paratypes: PAPUA NEW GUINEA, Central Prov.: 9 males, 9 females, 1 immature, same data as holotype, CL 7157, D. A. Polhemus (USNM, BPBM); 2 males, 6 females, Owen Stanley Range, Hane River, 1.8 km. SSE of Fane, 1310–1370 m., 8°34′00′′S, 147°05′10′′E, water temp. 19 °C., 3 October 2003, 10:30–13:30 hrs., CL 7253, D. A. Polhemus (USNM); 1 male, Owen Stanley Range, Mas River, 2.0 km. SW of Fane, 1235 m., 8°33′25′′S, 147°04′04′′E, water temp. 20 °C., 5 October 2003, 10:00–13:30 hrs., CL 7257, D. A. Polhemus (USNM). Southern Highlands Prov.: 2 males (dissected), 3 females, small rocky creek in disturbed forest, approx. 1.0 km. N. of Tubage, NE of Moro, 1000 m., 06°19′43′′S, 143°17′30′′E, water temp. 21° C., 14 March 1995, 14:30–15:00 hrs.; 22 March 1995, 13:00–13:30 hrs., CL 7022, D. A. Polhemus (USNM, BPBM); 1 male (dissected), small forest tributary to upper Mubi River at Swinging Bridge, nr. Tubage, NE of Moro, 900 m., 06°19′31′′S, 143°17′57′′E, water temp. 20° C., 14 March 1995, 11:00–13:00 hrs., CL 7020, D. A. Polhemus (USNM); 1 female, seeping rock face and roadside streamlets, approx. 2 km. S. of Moro oil camp on road to Iagifu Ridge, 950 m., 06°22′10′′S, 143°13′21′′E, 21 March 1995, 13:30–16:00 hrs., CL 7031, D. A. Polhemus (USNM). Description. Male: Length 10.40 mm, width across pronotum 3.90 mm. Coloration: Ground color dark greyish-brown (Fig. 25). Vertex and frons varying from uniform medium brown to uniform creamy white. Pronotum medium brown, sometimes paler brown along anterior margin. Scutellum black to dark brown, sometimes becoming creamy white on posterior half. Hemelytra dark grey, often with with anterior margins of clavus bordering scutellum broadly pale, forming a chevron-shaped fascia; wing membrane dark fumate brown. Legs brown, anterior edges of fore and hind femora margined with black. Venter brown. Structural characters: Head broadly rounded anteriorly when viewed dorsally. Head length 1.15; greatest width 3.10, equal to 0.79 pronotal width; anterior width of vertex 1.00, equal to 0.87× head length. Synthlipsis 0.60, about 0.60 anterior width of vertex and clearly shorter than pronotum. Pronotal length along midline 1.20, humeral width 3.90, lateral margins convex, posterior margin weakly sinuate. Dorsal margin of pronotal fovea directed caudad behind eyes. Nodal furrow nearly straight, removed by 2.0× its length from membranal suture, length 0.70, distance to membranal suture 1.40. Front and hind legs typical for genus, lacking unusual modifications. Middle trochanter rounded. Middle femur with single large, elongate, sharp subapical tooth, bordered basally by about 13 small black pegs, distally by about 4 similar pegs. Lengths of leg segments as follows: fore femur–tibia–tarsal 1–tarsal 2 = 1.50/1.80/0.70/0.30; middle femur–tibia–tarsal 1–tarsal 2 = 2.60/2.30/0.70/0.40; hind femur–tibia–tarsal 1–tarsal 2 = 4.20/3.50/1.50/0.70. Ventral abdomen with metaxyphus triangular, slightly concave, tip acuminate (Fig. 7). Male genitalia when viewed laterally (Fig. 20) with proctiger dorsal apex weakly sinuate, apex truncate; posterior lobe of pygophore with posteroventral angle obtuse, bearing a prominent tapering setal tuft, posterior lobe of pygophore erect, apex broad and blunt, posteriorly setiferous, slightly notched anteriorly on dorsal margin; paramere elongate, slightly tapering, apex rounded, reaching to dorsal margin of posterior lobe; lateral arm of basal plate stout, elongate, apex weakly angular, ventral margin slightly keeled near apex; aedeagus semicircular, with numerous transverse folds. Female: Length 10.00, width across pronotum 3.95 mm. Similar to male in general structure and coloration, with following exceptions: coloration generally paler, with all or part of vertex, frons, pronotum and scutellum creamy white (Fig. 26). Etymology. The name “papua” is a noun in apposition, and refers to the geographic range of this species, which occurs in river basins draining to the Gulf of Papua. Discussion. Among the New Guinea Enithares assemblage, E. papua appears allied to E. atra, E stylata, and E. elongata, as well as E. bosavi and E. peninsularis newly described herein, on the basis of the large, blunt PL with a notch anterodorsally, and the well-developed paramere that reaches to or slightly exceeds the dorsal margin of the PL (Figs. 17, 19, 20, 21, 35, 37). Among this group of species, E. papua can be readily distinguished by its prominent LABP, which is elongate, weakly sinuate, and keeled apicoventrally (Fig. 20). The paramere shape is also slightly different from these other species, being slightly expanded basally, then gradually tapering distally to a rounded apex (Fig. 20). Enithares papua is similar in many respects to E. insularis, differing primarily in the structure of its male genitalia. The shapes of the PL and parameres are close, but the posterior paramere margin in E. papua is gently bowed, whereas in E. insularis it is straight, and the apex of the paramere in E. insularis is more rounded. The male proctiger has a curved ventral margin in both species in lateral view, but in E. papua the apex comes to an acute angle, rather than being bluntly rounded as in E. insularis (compare Figs. 18, 20). The structure of the LABP differs between the two species and is the most diagnostic gentalic character, with the distal portion of the LABP narrowed in E. insularis and then apically expanded to form a small bulb, whereas in E. papua the LABP is of nearly the same thickness throughout its length, terminating in a truncate apex with a small, angular point posteroventrally (compare Figs. 18, 20). In addition to these genitalic differences, the male fore femur of E. insularis has a very thick and extensive pad of short, dense black setae which runs the length of the anteroventral margin (Fig. 20); this setal pad is less prominently developed in E. papua, and is composed of pale brown to silvery setae. Ecological Notes. At the Tekadu type locality (CL 7157) E. papua was taken from a seepage-fed side channel in gravel and cobbles adjacent to the main Yaniwe River, which was swift and rocky. These shallow, shaded pools were devoid of fish, and also supported Hydrometra eioana J. Polhemus & Lansbury and an undescribed Microvelia species. At the Swinging Bridge locality (CL 7020), E. papua was taken from a small, steeply descending rainforest streamlet on the south bank of the Mupi River. Individuals occupied small pools connected by tiny riffles and cascades. At a nearby stream south of Tubage (CL 7022) this species was found in a small, heavily shaded forest stream with small pools connected by riffles (D. Polhemus 1995). Enithares papua is currently known from intermediate elevations in south-flowing drainages of the Owen Stanley Range and southern central highlands of Papua New Guinea (Fig. 22). Collection records span the Auga, Lakekamu, and Kikori river basins, indicating that this species will also be shown to occur in the intervening Purari River basin as well. By contrast, this species was not encountered in the south-flowing Ajkwa River basin of Indonesian New Guinea, to the west of the Digul River, despite comprehensive surveys in that drainage (D. Polhemus & J. Polhemus 2000). Based on these records, E. papua occupies the South Papuan Peninsula Foreland and Papuan Gulf Foreland areas of freshwater endemism (Areas 25 and 30) as defined by D. Polhemus & Allen (2007).Published as part of Polhemus, Dan A., 2020, Nine new species of Enithares (Heteroptera: Notonectidae) from New Guinea, with distributional notes on other species and an updated world checklist, pp. 132-182 in Zootaxa 4772 (1) on pages 139-144, DOI: 10.11646/zootaxa.4772.1.5, http://zenodo.org/record/381407
Figs. 37–39. Gestroiella siamensis D. Polhemus, J in Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Xi. Infraorder Nepomorpha- Families Naucoridae And Aphelocheiridae
No full textFigs. 37–39. Gestroiella siamensis D. Polhemus, J. Polhemus & Sites, structural details, specimen from Thailand, Thailand, Songkla Prov., Ton Nga Chang. 37. Female terminal abdomen, ventral view, showing shape of subgenital plate. 38. Male left paramere. 39. Medial process of male phallotheca.Published as part of Polhemus, Dan A. & Polhemus, John T., 2013, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Xi. Infraorder Nepomorpha- Families Naucoridae And Aphelocheiridae, pp. 665-686 in Raffles Bulletin of Zoology 61 (2) on page 681, DOI: 10.5281/zenodo.535270
Prohydrometra tohiea D. Polhemus 2022, n. sp.
No full textProhydrometra tohiea D. Polhemus n. sp. Figs. 23, 25, 29 Apterous male. Length 6.60, width 0.38. Color. Ground color brown to blackish-brown; abdomen light-brown medially, matte. Head broadly tinged with blackish. Thorax anteriorly and medially light colored dorsally; abdominal mediotergites light medially; each laterotergite with light area anteriorly. Venter of thorax and abdomen dark. Legs light-brown, antennae light-brown to brown; coxae and trochanters mostly light-brown. Structure. Head relatively long (2.43), widest at antenniferous tubercles (0.40); set with bristly setae beneath; gular lobe large, rounded; labium reaching well caudad of eyes, onto prosternum; head with anteocular portion slightly longer than postocular portion, ratio of anteocular/postocular portions: 1.38/0.95; interocular space/width of an eye: 0.08/0.10; anteclypeus small, broadly rounded anteriorly. Antennae with lengths of antennomeres I:II:III: IV = 0.40: 0.50: 2.53: 1.45. Thorax with pronotum length 0.78; remainder of thorax 0.45 (to lateral suture behind metacetabula); abdomen length 2.70. Wing pads, if present, very small, not visible, hidden under pronotum.Thoracic and abdominal sterna with short bristly setae, about equally dense on all segments. Distance between anterior and middle coxae (measured between closest margins) 0.18; between middle and hind coxae 0.30. Acetabula without pits. Venter without black denticles. Proportions of legs as follows: Femur, tibia, tarsomere I, tarsomere II, tarsomere III of fore-leg, 2.50: 3.10: 0.05: 0.40: 0.20; of middle-leg, 2.80: 3.50: 0.07: 0.35: 0.18; of hind-leg, 3.90: 5.80: 0.07: 0.45: 0.20. First abdominal segment short, transverse, clearly delineated by a suture posteriorly. Mediotergites longer than wide. Male abdominal sternum VII with two elongate patches of erect bristles, widely separated, and displaced from the anterior margin (Fig. 23); segment VIII cylindrical, unmodified, without distal process. Micropterous female. Length 7.50, width across abdomen 1.40. Similar in most respects to male, including antennomere ratios, but abdomen broader; abdominal mediotergites II–VII longitudinally rectangular, tergum VIII trapezoidal, distally truncate, without distal process; margins of laterotergites without setae. Abdominal terminalia simple, without modification. Brachypterous and macropterous forms. Unknown. Type material examined (all micropterous). Holotype, male: FRENCH POLYNESIA, Society Islands, Moorea, small gulch immediately W. of Mt. Tohiea summit (headwaters of Mahaeru River), 1150 m, 17°33'04"S, 149°49'22"W, 12 September 2006, 10:40–15:00 hrs., CL 7500, D. A. Polhemus (BPBM). Paratypes: FRENCH POLYNESIA, Society Islands, Moorea, 4 males, same data as holotype, CL 7500, D. A. Polhemus (BPBM, USNM); 1 female, Moorea, Mt. Tohiea, 17°33'04"S, 149°49'23"W, 1100 m, 12 September 2006, lot 04, pyrethrin fog of mossy log, J. K. Liebherr (CUIC); 1 female, Moorea, Mt. Tohiea, 17°33'04"S, 149°49'23"W, 1100 m, 12 September 2006, lot 03, beating Dicranopteris ferns, J. K. Liebherr (CUIC). Distribution. French Polynesia, Society Islands, endemic to the island of Moorea (Fig. 29). Etymology. The species name “ tohiea ” is a noun in apposition, and refers to the Mt. Tohiea type-locality, the highest summit on the island of Moorea. Discussion. The male of P. tohiea differs from all other species of the genus in the modification of male abdominal ventrite VII, which possesses two widely separated, longitudinally elongated patches of bristles (Fig. 23). In the other two species in the genus which possess bristle patches rather than sclerotized processes, P. teatara from Tahiti and P. johnpolhemi from Raiatea, the patches are much smaller and roughly triangular in shape (compare Figs. 22–24). All of these species may represent individual island representatives of a common clade within the genus, but this has yet to be definitively established. Females of P. tohiea occur syntopically with those of P. moorea, and are quite similar in many respects, but in this sex the two species can be separated by the relative lengths of the antennomeres, with segment III being less than 6.5 times that of antennomere I in P. tohiea, versus over 7.3 times as long as antennomere I in P. moorea. Ecological notes. The type series was taken from a small pocket of wet forest immediately below the summit of Mt. Tohiea, bordered by sheer cliffs (Fig. 25). Prohydrometra tohiea occurred there in company with P. moorea, three species of locally endemic Nabidae (Nabis toheia D. Polhemus, 2010, N. mooreana D. Polhemus, 2010, and N. polynesica D. Polhemus, 2010), and an undescribed species of arboreal Saldidae. All were taken by light pyrethrin fogging of fern banks and mossy tree trunks, or by beating banks of Dicranopteris Bernh. ferns.Published as part of Polhemus, Dan A., 2022, Two new genera and six new species of Terrestrial Hydrometridae (Hemiptera: Heteroptera) from French Polynesia, pp. 69-98 in Zootaxa 5190 (1) on pages 83-84, DOI: 10.11646/zootaxa.5190.1.3, http://zenodo.org/record/711984
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