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Aretidris buenaventei David Emmanuel M. GENERAL 2015, sp.n.
No full textAretidris buenaventei sp.n. (Figs. 1 6) Type material: Holotype worker, Philippines: Luzon Island, Nueva Vizcaya Province, Municipality of Quezon, Mt. Palali, Maddianggat Village, 1436 m a.s.l., 16 ° 27 ' 24.1 " N, 121 ° 13 ' 17 " E, 5.I. 2010, primary upper montane forest, ex log nest, leg. P.A.C. Buenavente (PNM 8980) (deposited in PNM).Paratypes: 22 workers with same data as holotype (PNM 8981 9002) (one pin each to: ANIC, BMNH, CASC, DMGC, NHMW, PACB, UPLB; two pins to MCZC; the rest to PNM). Description of holotype worker: CI 88, EI 18, EL 0.16, HFL 1.3, HL 1.03, HW 0.90, ML 1.40, MtL 1.85, PW 0.73, SI 108, SL 0.98, TL 5.43. With all the character states of the genus. Body, except gaster and appendages, heavily sculptured. Head alveolate, each cavity bearing an erect or suberect hair. Mesosoma, petiole, and postpetiole alveolate with superimposed rugae. Mandible, median clypeus, and gaster smooth. First gastral tergite slightly less than half the length of gaster. Description of paratype workers: CI 84 95, EI 16 19, EL 0.15 0.18, HFL 1.15 1.35, HL 0.98 1.08, HW 0.88 0.95, ML 1.38 1.50, MtL 1.75 1.93, PW 0.73 0.78, SL 0.88 1.03, TL 5.28 5.74 (17 measured). Bionomics: This species was found when a rotten log on the forest floor containing its nest was disturbed in the dying light of late afternoon. Some foragers were collected by hand from nearby after the nest series of workers and brood were collected. Etymology: This species is dedicated to my friend and colleague, Perry Archival C. Buenavente, researcher of the National Museum of the Philippines, who tirelessly surveys ant diversity in the Philippines and collected the type nest series.Published as part of David Emmanuel M. GENERAL, 2015, Aretidris, a new genus of ants (Hymenoptera: Formicidae: Myrmicinae) from the mountains of Luzon Island, Philippines, pp. 131-136 in Myrmecological News 21 on page 13
Aretidris clousei David Emmanuel M. GENERAL 2015, sp.n.
No full textAretidris clousei sp.n. (Figs. 7 12) Type material: Holotype worker, Philippines: Luzon Island, Sorsogon Province, Municipality of Bulusan, Bulusan Volcano Natural Park, Aguingay Lake, Southwest Ridge, 900 m a.s.l., 12 ° 46 ' 13 " N124 ° 04' 16 " E, 9.VI. 2014, secondary forest, ex leaf litter, leg. R. Clouse (PNM 9004) (deposited in PNM).Paratypes: 2 workers with same data as holotype;2 workers with same data as holotype except 10.VI. 2014 (PNM 9005 9008) (one pin each to: ANIC, BMNH, MCZC, UPLB). Description of holotype worker: CI 87, EI 23, EL 0.19, HFL 1.13, HL 0.95, HW 0.83, ML 1.38, MtL 1.23, PW 0.68, SI 103, SL 0.85, TL 4.65. With all the character states of the genus. Body mostly smooth. Scattered punctures over the head and mesosoma bear long erect to suberect hairs. First gastral tergite (= abdominal tergite IV) huge, accounting for most of the length of gaster. Description of paratype workers: CI 84 89, EI 20 24, EL 0.16 0.20, HFL 1.10 1.15, HL 0.93 0.98, HW 0.80 0.84, ML 1.33 1.40, MtL 1.13 1.23, PW 0.68 0.73, SI 97 106, SL 0.80 0.88, TL 4.55 4.76 (4 measured). Bionomics: This species was collected by leaf litter sifting. It forages diurnally as individuals in the leaf litter. Etymology: This species is dedicated to my good friend Ronald M. Clouse who collected all the type specimens. Discussion This genus has been collected at high elevations only on Luzon Island (Fig. 13) (elevations of surveys in parentheses): (a) Sorsogon Province, Municipality of Bulusan, Bulusan Volcano Natural Park (900 m a.s.l.); (b) Camarines Sur Province, Naga City, Panicuason Village, Mt. Isarog Natural Park (1550 m a.s.l.); and (c) Nueva Vizcaya Province, Municipality of Quezon, Madianggat Village, Mt. Palali (1436 m a.s.l.). Historical collections from other highelevation localities in the Philippines by C.F. Baker, C.S. Banks, W.L. Brown, Jr., J.W. Chapman, H.M. Curran, D. Empeso, R.C. MacGregor, H.M. Torrevillas, and F.X. Williams do not contain any specimens of Aretidris (GENERAL & ALPERT 2012; G.D. Alpert, pers. comm.; SHATTUCK & al. 2014; WHEELER & CHAPMAN 1925). Recent collections from lowelevation localities on Luzon Island and highelevation localities on other islands by P.A.C. Buenavente, R.M. Clouse, P. Sharma, A.C. Diesmos, A. Reginaldo, and myself do not contain Aretidris ants either. Although only a few other localities have been sampled for the presence of these ants, it appears that Aretidris ants are restricted to high elevations. More localities need to be sampled to establish the range of these ants and the occurrence of other species.Published as part of David Emmanuel M. GENERAL, 2015, Aretidris, a new genus of ants (Hymenoptera: Formicidae: Myrmicinae) from the mountains of Luzon Island, Philippines, pp. 131-136 in Myrmecological News 21 on page 13
Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935
No full textDavid Emmanuel M. General (2016): Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935. Halteres 7: 112-119, DOI: 10.5281/zenodo.5531
Figures 1-4 in Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935
No full textFigures 1-4. Romblonella longinoi sp. n. (holotype): 1. lateral view; 2. full-face view; 3. dorsal view; 4. labels. Images kindly provided by Dr. John T. Longino.Published as part of David Emmanuel M. General, 2016, Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935, pp. 112-119 in Halteres 7 on page 115, DOI: 10.5281/zenodo.5531
Romblonella Wheeler 1935
No full textRomblonella Wheeler, 1935 Type species: Romblonella grandinodis Wheeler, 1935 (junior synonym of Myrmica opaca F. Smith, 1861), by original designation.Published as part of David Emmanuel M. General, 2016, Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935, pp. 112-119 in Halteres 7 on page 113, DOI: 10.5281/zenodo.5531
Figure 10 in A review of the ant genus Harpegnathos Jerdon, 1851 (Hymenoptera: Formicidae) in the Philippines, with the description of two new species
No full textFigure 10. Inset map showing distribution of two Harpegnathos species on Mt. Isarog. The coordinates for Harpegnathos alperti are representative coordinates for Mt. Isarog Natural Park from the Philippine Gazetteer (DIVA-GIS 2014) and do not indicate the actual collection site forPublished as part of David Emmanuel M. General, 2016, A review of the ant genus Harpegnathos Jerdon, 1851 (Hymenoptera: Formicidae) in the Philippines, with the description of two new species, pp. 99-105 in Halteres 7 on page 104, DOI: 10.5281/zenodo.26982
Harpegnathos
No full textKey to the Philippine species of Harpegnathos, based on the worker 1. Dorsum of head reticulo-punctate; mandibles converging rather abruptly from attachments…………………………….. 2 - Dorsum of head striate; mandibles converging gradually from attachments……………………… …….. 3 2. Sculpture on dorsa of pronotum, mesonotum, propodeum and petiole reticulo-punctate; pilosity on body moderately abundant……….. H. venator rugosus Mayr - Sculpture on dorsum of pronotum with irregular striae diverging posteriorly; dorsum of mesonotum with irregular but subparallel striae; dorsum of propodeum coarsely punctuate; petiole with dorsal and lateral coarse punctation; pilosity on body sparse ………………….... H. alperti sp. n . 3. First and second gastral tergite with coarse punctation over underlying punctulation; in full-face view, posterior margin of head straight; mandibles orange with infuscated base ………. H. honestoi sp. n. - First and second gastral tergite with punctulation only; in full-face view, posterior margin of head shallowly emarginated; mandibles concolorous yellow…………………………………… 4 4. Antennal scape barely exceeds posterior margin of head by about the width of scape; propodeal declivity bounded by lateral carinae; pilosity on body sparse...................... H. empesoi Chapman - Antennal scape exceeds posterior margin of head by almost 1 / 3 length of scape; propodeal declivity not bounded by lateral carinae; pilosity on body moderately abundant….......................... H. macgrego ri Wheeler & ChapmanPublished as part of David Emmanuel M. General, 2016, A review of the ant genus Harpegnathos Jerdon, 1851 (Hymenoptera: Formicidae) in the Philippines, with the description of two new species, pp. 99-105 in Halteres 7 on page 104, DOI: 10.5281/zenodo.26982
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Romblonella longinoi General, sp. n.
No full textRomblonella longinoi General sp. n. urn:lsid:zoobank.org:act: 78 EC 95 E 1-4 BFE- 49 B 9 -BC 70 -AD 3913770 D 4 E Measurements and indices Worker measurements of holotype worker [paratype (n= 17) mean: range in brackets]: TL 4.01 [3.97: 3.67-4.14], HL 0.90 [0.89: 0.79-0.97], AHW 0.63 [0.69: 0.61-0.77], PHW 0.85 [0.84: 0.77-0.90], SL 0.54 [0.50: 0.36-0.58], EL 0.13 [0.18: 0.12-0.22], EW 0.13 [0.13: 0.11-0.14], PW 0.67 [0.63: 0.58-0.67], ML 1.13 [1.07: 1.01-1.13], SPL 0.43 [0.38: 0.32-0.43], PetL 0.47 [0.42: 0.38-0.47], PetW 0.36 [0.35: 0.3 1 - 0.49], PetH 0.47 [0.43: 0.38- 0.49], PPL 0.31 [0.30: 0.27-0.34], PPW 0.45 [0.45: 0.41-0.47], PPH 0.41 [0.39: 0.36-0.41], GL 1.08 [1.17: 1.03-1.42]. Indices: CI 82 [86: 80-98], EI 16 [22: 13-25], SI 73 [65: 47-77]. Description of worker (Figures 1-4): In full face view, posterior margin of head shallowly emarginate; head longer than wide; sides of head diverging posteriorly; eyes laterally located, slightly behind midlength of head; shallow scrobe present; frontal carina long, almost reaching the posterior margin of head; scapes short, exceeding posterior edge of eye by about 2 X width of distal scape; antennal formula 12: 3; mandibles triangular, with 6 robust teeth; palp formula 5: 3; median clypeus carinate, with a median carina flanked by 3 pairs of lateral carinae; median clypeus inserted between frontal lobes and about as wide as frontal lobe; anterior clypeal margin entire, without an isolated median seta; head rugoreticulate with short cross-hatches that reach the adjacent rugae; punctae in interstitial spaces; mandibles striate. In lateral view, dorsal margin of mesosoma evenly convex and arched, without grooves or sutures; propodeal spines long and stout; petiole sessile, with anterodorsally directed angle over petiolar spiracle; petiole massive, larger and taller than postpetiole; anterior subpetiolar denticle present; spurs absent on meso- and metatibia. In dorsal view, pronotum with angulate humeri; sides of promesonotum converging posteriorly; sides of propodeum subparallel but bulging slightly anterior to propodeal spiracle; stout propodeal spines slightly divergent through their entire length; mesosoma, petiole and postpetiole dorsally reticulate with interstitial punctulae; first gastral segment(= 4 th abdominal) punctulate. Head with evenly distributed short, blunt erect hairs that are shorter than distance between them; scape with suberect hairs; short, blunt erect hairs sparsely distributed over rest of body. Body distinctly bi-colored; body yellow to orange except for brown antennal club, legs, distal and lateral edges of first gastral segment, and gastral segments 2-5. Mean measurements (range in brackets) and indices of male paratype (n= 2): TL 4.0 [3.96- 4.03], HL 0.72 [0.68-0.76], AHW 0.40 [0.40 - 0.40], PHW 0.69 [0.68-0.70], SL 0.15 [0.14- 0.16], EL 0.38 [0.37-0.40], EW 0.28 [0.28- 0.29], PW 0.57 [0.56-0.58], ML 1.14 [1.13- 1.15], GL 1.30 [1.30 - 1.30], CI 96 [93-100], EI 55 [53-58], SI 73 [70-76]. Diagnosis of male paratype (Figures 5-15): Alate; approximately as long as worker, but more gracile. In full-face view, head longer than broad; sides of head diverging posteriorly, posterior head width behind compound eyes about ¾ wider than anterior head width; ocelli not unusually large (compared with images of male R. palauensis, M.R.Smith, 1953), width of ocelli subequal to distance between lateral ocellus and median ocellus; lateral ocelli separated by about 2 X width of median ocellus; compound eye large, convex, occupying about 2 / 3 side of the head; posterior margin of head medially straight, laterally with lobes; antenna long, subfiliform, with 13 segments (Figures 6 and 7); length of antennomeres (one male measured) antennal scape, 0.0 8 mm; antennomere 2, 0.0 4 mm; antennomere 3, 0.2 7 mm; antennomere 4-7, range = 0.1 2 - 0.1 9 mm; antennomere 8, 0.23 mm; antennomere 9-13, range = 0.1 3 - 0.1 8 mm; antennomere 4-7 slightly and gently broadened distally, such that the basal end of succeeding segment is narrower than the distal end; antennomere 3-7 broader than antennomere 8-13; clypeus broadly projecting anteriorly, forming a rounded obtuse angle; mandible triangular, well-developed and functional; masticatory margin with 6 sharp triangular teeth; apical tooth longest, about 2 X longer than preapical tooth; tooth 4 smallest; rest of teeth subequal; palp formula 5: 3. In lateral view, lower portion of compound eye not obscuring gena and ventral margin of head; pronotum with a flat dorsal outline; mesonotum forming a low dome that slopes gently posteriorly to the propodeal dorsum; mesepimeron not bearing epimeral lobe; vertical impression on anterior third of metakatepisternum; propodeal spiracle circular; propodeal declivity almost vertical, forming a rounded obtuse angle with the propodeal dorsum; petiole tube-like, more than 2 X longer than tall, with an indistinct, truncated node; postpetiole about half as long as petiole, with a low, rounded node; first gastral segment (AIV) longest, about half the length of gaster; tibial spurs absent on middle and hind legs; external genitalia as in Figures 11 to 14. In dorsal view, notauli and parapsidal furrows present; notauli abbreviated, not meeting posteriorly; petiole longer than wide; postpetiole wider than petiole; gaster elongateovate. Forewing (Figure 9) with pterostigma; cross-veins 1 r-rs and 2 r-rs present; free abscissa 2 rs-m originating at distal 2 / 3 of Rs (radial sector) vein. Four closed cells present: C, R, 2 R 1, and 3 R 1. Hindwing as in Figure 10. Clypeus carinate, with about 6 short, sinuate longitudinal carinae; head longitudinally rugulose, with short cross-hatches that do not reach the adjacent rugula, and with a ground surface of fine reticulation; mandibles longitudinally carinate; dorsal mesosoma ruguloreticulate; propodeum transversely rugose; petiole dorsally and laterally rugo-reticulate; postpetiole dorsally and laterally ruguloreticulate; gaster finely reticulate dorsally. Pale yellow erect and sub-erect hairs evenly but sparsely distributed all over body; legs with decumbent hairs; antennae with yellowish, short, fine hairs. Body and distal 5 antennal segments brown; mandibles, basal 8 antennal segments and tarsi yellowish-brown. Gyne unknown. Material examined Holotype worker, “ MALAYSIA: Sabah, Mamutik Island, 10 m asl, 5.96657 °N, 116.01336 °E ± 200m, 29.VIII. 2010, leg. J. Longino, JTL 7211, ex dead stem, CASENT0617007” (deposited in CASC). Paratypes (17 workers, 2 male alates) same data as holotype (deposited in ANIC, BMNH, CASC, DMGC, JTLC, MCZC, USNM). Bionomics: This species, represented by a nest series, was collected from a dead stem in wet tropical forest. Etymology: This species is dedicated to my friend and colleague, Dr. John T. Longino, who collected this rare nest series with 2 associated males. Comparative Notes The worker of R. longinoi sp. n. is distinguishable from the workers of all known species of the genus in its head capsule that is posteriorly broadened. All other species possess a head capsule that is roughly parallel-sided. Other morphological differences are summarized in the key. In addition, R. longinoi sp. n. workers are colored differently from any other Romblonella species. The male R. longinoi sp. n. is distinguished from R. palauensis M.R. Smith, 1953 by the following characters: sides of head diverging posteriorly, ocelli not unusually large, lateral ocelli separated by about 2 X width of median ocellus; compound eye large, convex, occupying about 2 / 3 side of the head, lower portion of compound eye not obscuring gena and ventral margin of head, free abscissa 2 rs-m originating at distal 2 / 3 of Rs (radial sector) vein, and propodeum transversely rugose (Smith, 1953).Published as part of David Emmanuel M. General, 2016, Romblonella longinoi (Hymenoptera: Formicidae), a new species and first record of the genus from Sabah, Malaysia, with a key to the species of Romblonella Wheeler, 1935, pp. 112-119 in Halteres 7 on pages 113-117, DOI: 10.5281/zenodo.5531
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