Pygophora unicolor crosskeyi Vikhrev, 2019

Vikhrev, N. E., 2019, Notes on taxonomy of Pygophora Schiner, 1868 (Diptera: Muscidae), Russian Entomological Journal 28 (4), pp. 464-469 : 468

Pygophora unicolor crosskeyi Vikhrev , ssp.n.

Figs 5 , 8 .

MATERIAL. Holotype ♂: THAILAND, Chiang Mae prov. ( Rd. 1095, 5 km E of border with Mae Hong Son prov.), 19.25°N 98.64°E, 1130 m asl, 15.11.2010, N. Vikhrev. Paratypes, 6♂♂, 16♀♀ : INDIA: Goa state ( Margao env.), 15.124°N 74.003°E, 19.02.2009, K.Tomkovich, 1♀ ; Meghalaya state, Tyrna env., YPTrap, 25.24°N 91.67°E, 18– 21.12.2013, K.Tomkovich, 2♀♀ ; W Bengal state, Kalimpong , 27.07°N 88.44°E, 1– 11.12.2013, K.Tomkovich, 2♀♀ . THAILAND: Chanthaburi prov.: Krating Resort env., 12.82°N 102.13°E, N. Vikhrev: 23.12.2007, 1♀ ; 8.02.2009, 1♀ ; A. Ozerov , 8.02.2009, 1♂ ; N. Vikhrev , 1– 4.11.2009, 4♂♂ 4♀♀ ; Pong Nam Ron env. (12.92°N 102.25°E), 20.12.2008, N. Vikhrev, 1♀ ; Chiang Mai prov.: Sop Poeng env., 19.122°N 98.805°E, 13– 17.11.2009, N. Vikhrev, 1♀; (Rd. 1095, 5 km E of border with Mae Hong Son prov.) , 19.25°N 98.64°E, 1130 m asl, 15.11.2010, N. Vikhrev, 1♀; Chonburi prov., Chan Ta Then waterfall, 13.242°N 101.045°E, 3.02.2009, N. Vikhrev, 1♀ ; Trat prov., Ko Chang Isl. , 12.1°N 102.3°E, 8– 14.12.2011, N. Vikhrev, 1♂ . VIETNAM, Lao Cai prov., Lao Cai env., 22.492°N 103.897°E, 135 m asl, 3.11.2015, D. Gavryushin, 1♀ .

DISTRIBUTION. S Asian mainland from India in the west through Thailand to Vietnam in the east.

DIAGNOSIS. Small Pygophora with male femora yellow except for hind one which is more or less darkened in basal half. Paralobe of hypopygium at middle of the inner surface with a characteristic semicircular-shaped process ( Fig. 8 ); sternite 5 as on Fig. 10.

P. unicolor crosskeyi ssp.n. differs from the nominotypical P. u. unicolor as follows:

— Body length: ♂ — 3.8–4.1mm, ♀ — about 5 mm. ♂:

Femora mostly dark, only apical 1/4 yellow ( Fig. 4 ). ♀:

Abdominal tergites entirely black. Sunda Islands: Borneo,

Java and Bali. ................................. P. u. unicolor Stein — Body length: ♂ — 2.9–3.2 mm, ♀ — about 4 mm. ♂:

Legs yellow, only f3 more or less darkened in basal 2/3

( Fig. 5 ). ♀: tergites 3 to 5 whitish-grey on posterior margin. S Asian mainland: India, Thailand, Vietnam.

..................................................... P. u. crosskeyi ssp.n.

VARIATIONS. 1. One male ( Thailand, Trat prov.) and female ( Thailand, Chonburi prov.) have all femora and tibiae evenly dark brown. Shinonaga, Tewari [2008] also described their male as “legs entirely dark brown”.

2. Three females ( Thailand, Chiang Mae; India, Goa and West Bengal) have postpedicel entirely orange-yellow instead of normal brown with a yellowish base .

ETYMOLOGY. Named in memory of R. W. Crosskey, whose contribution to the study of the genus Pygophora is difficult to overestimate.

Figures

Figs 4–7. Pygophora spp.: 4 — ♂ P. unicolor unicolor (Borneo); 5 — ♂ P. unicolor crosskeyi ssp.n. (Thailand); 6 — ♂ Holotype P. yanbulat sp.n.; 7 — ♀ paratype P. yanbulat sp.n. Рис 4–7. Pygophora spp.: 4 — ♂ P. unicolor unicolor (Борнео); 5 — ♂ P. unicolor crosskeyi ssp.n. (Таиланд); 6 — ♂ Голотип P. yanbulat sp.n.; 7 — ♀ паратип P. yanbulat sp.n.

Figs 8–12. Pygophora ssp.: 8 — P. u. crosskeyi ssp.n., paralobes of hypopygium ventral and lateral; 9 — P. yanbulat sp.n., paralobes of hypopygium ventral and lateral; 10 — P. yanbulat sp.n., sternite 5 ventral; 11 — P. u. unicolor, ♂ arista; 12 — P. yanbulat sp.n., ♂ arista. Рис 8–12. Pygophora ssp: 8 — P. u. crosskeyi ssp.n., паралобы гипопигиума, вентрально и латерально; 9 — P. yanbulat sp.n., паралобы гипопигиума, вентрально и латерально; 10 — P. yanbulat sp.n., стернит 5 вентрально; 11 — P. u. unicolor, ♂ ариста; 12 — P. yanbulat sp.n., ♂ ариста.