Pygophora yanbulat Vikhrev, 2019
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publication ID |
https://doi.org/ 10.15298/rusentj.28.4.16 |
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persistent identifier |
https://treatment.plazi.org/id/0393843A-754A-FE27-FC05-F3109B40B970 |
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treatment provided by |
Felipe |
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scientific name |
Pygophora yanbulat Vikhrev |
| status |
sp. nov. |
Pygophora yanbulat Vikhrev View in CoL , sp.n.
Figs 6, 7 View Figs 4–7 , 9–10, 12–13 View Figs 8–12 View Fig .
MATERIAL. Holotype ♂: INDONESIA, Papua prov., Wamena env., Baliem Resort , 2000 m asl, 4.059°S 139.032°E, 16– 25.12.2014, N. Vikhrev, 1♂. Paratypes, 14♂♂, 13♀♀, the same locality, 11– 16.12.2017, N. Vikhrev, M. Yanbulat GoogleMaps .
DESCRIPTION. MALE ( Fig. 6 View Figs 4–7 ). Body length: 3.2–3.7 mm.
Head. Frons black, fronto-orbital plates brown, parafacial and face whitish-grey, occiput grey.Frons at least 1/3 head width. Anterior facets of eye enlarged. Apart from typical 2 inclinate and 2 reclinate setae, fronto-orbital plates with 1 supernumerary inclinate seta (0.3–0.6x as long as strong inclinates) and 1 small setulae near anterior inclinate seta. Antenna dark brown, postpedicel long, falling mouth margin by 0.1 of its length; postpedicel 5 times as long as wide. Arista with 6(5) upper and 4(3) lower hairs, these hairs form a sparse rows almost all along the length of arista (i.e. as in P. longipila Stein, 1910 , not as in most Pygophora ), aristal hairs as long as width of postpedicel ( Fig. 12 View Figs 8–12 ). Palpi yellow with dense black setulae, mentum of proboscis shining black.
Thorax black, scutum in anterior view greyish-black, with 3 indistinct black vittae, humeral calli and pleura grey dusted. Typical 1+3 strong dc, but one more pair of dc setulae is distinct in front (0.3–0.4x as long as anterior prst dc). Acrostichal setulae in 2 rows, no minute hairs between ac rows present; 1–2 pairs of prst ac are distinctly elongated. Wings distinctly and evenly darkened. Calypters brownish, halter yellow.
Legs black, but knees yellowish and tibiae more or less brownish, especially fore tibia. f1 with a row of 9–10 strong pv setae and 10–12 weak setulae. t1 with long fine pv (2–2.5x t1 width). f2: a row of 6–8 a setae in basal half; complete row of av which are in basal half 0.5–0.7x as long as femur width and short in apical half; 3(2) fine long (1.3x femur width) pv in basal half and a row of short pv in apical half; 2 preapical pd. t2 with 2 p setae (1.5x as long as tibia width). f 3 in basal half with 3 pv, the second one the longest, about 2x as long as femur width; in apical half with 3 strong av. t3 with 1 av, 2 ad and 2 pd, all strong 1.5–2x as long as tibia width.
Abdomen entirely dark. Anterior margin of tergites dust- ed grey, this dusting is more extensive and distinct on lateral surface; posterior margin of tergites has narrow whitish band. Tergites without specialized bristles; tergite 5 without marked dorsal keel. The paralobe of hypopygium as on Fig. 9 View Figs 8–12 ; abdominal sternite 5 as on Fig. 10 View Figs 8–12 .
FEMALE ( Fig. 7 View Figs 4–7 ) differs from male as follows: larger, body length: 3.6–4.3 mm; arista with longer hairs; postpedicel shorter, falling mouth margin by 0.25 of its length; scutum in anterior view distinctly grey dusted, with 3 distinct black vittae; calypters whitish; all tibiae brownish; posterior margin of tergites with more extensive whitish band; shape of abdomen typical for Pygophora female, with pointed apex.
ETYMOLOGY. Named after the co-collector of the type series and my wife MariaYanbulat, the surname is given in the nominative case as apposition.
DIAGNOSIS. P. yanbulat sp.n. differs from other species with entirely black body as follows:
— Supernumerary inclinate seta absent. Aristal densely haired in basal half, while apical half hairless ( Fig. 11 View Figs 8–12 ). Frons at middle 1/4 or less of head width. ♂: Mid and hind femora without strong setae. Tibiae and apical 1/4 of femora yellow, sometimes legs entirely yellow ( Figs 4–5 View Figs 4–7 ). At middle of the paralobe of hypopygium on the inner surface there is a characteristic semicircular-shaped process ( Fig. 8 View Figs 8–12 ). ♀: Apical 1/4 of femora yellow. Acrostichal with 2 rows of setulae and minute hairs inside. ................................................................ unicolor Stein
— Apart from typical 2 inclinate and 2 reclinate setae, fronto-orbital plates with 1 supernumerary inclinate seta. Aristal hairs form a sparse rows almost all along the length of arista ( Figs 12 View Figs 8–12 ). Frons at middle 1/3 or more of head width. ♂: Mid and hind femora with setae as strong as in female, femoral setae 1.5–2x as long as width of femora (f2 with 3 pv; f3 with 3 pv and 3 av). Legs entirely black or dark brown, only knees yellowish ( Fig. 6 View Figs 4–7 ). The paralobe of hypopygium without inner process at middle ( Fig. 9 View Figs 8–12 ). ♀: Femora entirely black ( Fig. 7 View Figs 4–7 ). Acrostichal setulae in 2 rows, without minute hairs inside. ................................. yanbulat sp.n. The size, body shape and presence of supernumerary inclinate seta P. yanbulat sp.n. reminds P. enigma Crosskey,
1962, which also was collected in Baliem Resort. However,
P. enigma has the abdomen mostly and legs entirely yellow; the arista is haired on basal half only; the male genitalia are strongly different.
ECOLOGY. The majority of specimens of P. yanbulat sp.n. were collected at forest edge around Baliem Resort, from tree and brush foliage from a height of 1.5–3.0 m, some specimens from the Resort garden ( Fig. 13 View Fig ).
Acknowledgements. I thank Oleg Kosterin (Novosibirsk) for corrections of the text.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.