Amblypsilopus pascali, Bickel, 2019

Bickel, Daniel J., 2019, The Amblypsilopus amnoni and megastoma groups in New Guinea (Diptera: Dolichopodidae: Sciapodinae), Israel Journal of Entomology (Oxford, England) 49 (2), pp. 195-214 : 202-203

Amblypsilopus pascali n. sp.

( Figs 3, 4)

LSID: urn:lsid:zoobank.org:act:BBAA4C0F-2D16-47C0-82A4-3464125BEA54 .

Etymology: This species is named in honor of Pascal Sannuto for his logistical contribution to this study.

Description: Male. Length 7.2 mm, wing 6.6× 1.8 mm ( Fig. 3).

Similar to A amnoni except as noted:

Head. Pedicel with subapical coronal of short black setae and with both strong dorsal and ventral seta.

Legs (all leg II and tarsus of leg III missing). CI, all trochanters, femora, tibiae and basal tarsomeres yellow, with distal tarsomeres becoming infuscated, and as noted below; CII dark brown basally, yellow on distal half, and CIII all dark brown; legs with short black vestiture; I: 8.5, 9.6, 21.0/3.0/2.5/1.0/2.2; TI slightly bowed, and with long cUrved pale yellow seta near ⅞, sUbtended basally by 4 weaker posterior setae (MSSC) and slightly swollen apically; It 1 unusually long and bowed, more than twice length of TI (MSSC) ( Fig. 4); It 4 flattened into 3 bright ivory colored surfaces and with black setae near join with It 5 (MSSC); It 5 black, flattened and expanded into large apical pinnate flag with (MSSC); III: 11.0, 19.3, tarsus missing; TIII setation similar.

Wing. CuAx ratio 2.0.

Abdomen. Tergite 1 metallic blue green; tergites 2–5 mostly yellow, but brown anteriorly near tergal overlap and with metallic blue-green coloration along posterior third, with dark brown border before tergal edge; tergite 6 basally metallic violet, but distally, along with tergite 7, metallic blue-green; preabdomen with short black vestiture and longer setae near posterior tergal margins; sternite 8 dark brown; hypopygium ( Fig. 4) with dark brown epandrium and yellow surstyli, distal phallus and cercus; epandrium subrectangular; surstylus curved, about as long as epandrium, narrowed and sickle-like, and bare of setae; cercus swollen basally, on pointed extension of epandrium, and elongate with two digitiform arms bearing pale yellow setae, shorter arm near ⅖, and longer distal arm with black cUrved apical set, and with long curved yellow median seta arising near ½.

Female. Unknown.

Holotype: ♂ Papua New Guinea: Western Province, SE slope of Mt Arik (= Ian), NW of TabUbil, 5.10°S 141.09°E, 1625 m, 1–4.iv.1994, R.B. Lachlan ( AMS).

Remarks: Amblypsilopus pascali is known only from the rainforest type locality near 1600 m at Tabubil, Western Province, Papua New Guinea, and is close to the sympatrically occurring A. amnoni . However, it is clearly larger, has male basitarsus I more than twice length of tibia I, male leg I tarsomere 4 flattened and ivory colored, and tarsomere 5 flattened into a large rounded black pinnate flag ( Fig. 4).