Zygomyia toro, Kurina, 2012

Kurina, Olavi, 2012, Description of four new species of Zygomyia Winnertz from Ethiopia and Uganda (Diptera: Mycetophilidae), African Invertebrates 53 (1), pp. 205-205 : 213-215

Zygomyia toro sp. n.

Figs 5 , 15–18 , 23 , 27

Etymology: 7KH VSHFL¿F QDPH LV D QRXQ LQ DSSRVLWLRQ, GHULYHG IURP WKH 7RUR.LQJGRP, one of the traditional Kingdoms of Uganda, in which the type material was collected. Differential diagnosis: Distinguished from all other known Afrotropical Zygomyia species by the unique male terminalia ( Figs 15–18 ). Most similar to Z. yllae sp. n., sharing a similar outline of the male terminalia: gonocoxite with a narrow and sharp medial indentation ventroapically; ventral part of gonostylus bearing an internal macroseta and a twisted internal process; and dorsal part of gonostylus apically protruding. It differs in its smaller size, lighter colouration and details of the male terminalia: gonostylus with geniculate, irregularly tapering blunt macroseta ventrobasally (geniculate and evenly tapering in Z. yllae sp. n.) and in the tapering dorsoapical protruding process (apically widening in Z. yllae sp. n.).

Description:

Male.

Head: Brown with numerous dark setae.Two ocelli close to eye margins. Clypeus brown, lighter than head. Mouthparts yellow. Palpus with all segments yellow, two apical segments slightly paler, ratios of three apical segments 1.0:1.3–1.4:2.9–3.2. Scape brow- QLVK, SHGLFHO \HOORZ, ¿UVW ÀDJHOODU VHJPHQW \HOORZ RQ EDVDO KDOI WR WZR-WKLUGV, RWKHU ÀDJHOORPHUHV EURZQ.)ODJHOORPHUHV F\OLQGULFDO, PHGLDQ ÀDJHOORPHUH Í.5±Í.7î DV ORQJ DV EURDG, DSLFDO ÀDJHOORPHUH FRQLFDO,ƻ.8±³î DV ORQJ DV EURDG EDVDOO\. 6FDSH ZLWK VHWDH, including 2 dorsoapical bristles, extending to middle of pedicel. Pedicel with apical FURZQ RI VHWDH DQG D GRUVRDSLFDO EULVWOH H[WHQGLQJ EH\RQG DSH[RI ¿UVW ÀDJHOORPHUH. Flagellomeres with short whitish setae.

Thorax: Mesonotum dark brown, shoulders somewhat lighter. Pleural parts light brown. All bristles and setae on thorax dark brown. Scutellum with 4 strong marginal bristles and several weaker bristles along margin. Antepronotum with setae, including 6–8 bristles, of different lengths. Proepisternum with setae including 3 strong bristles. Anepisternum with 5–7 bristles of different lengths on dorsal part and with posteriorly-directed short setae. Anepimeron with 4 bristles on dorsal part and 2 or 3 short setae. Laterotergite with dorsally-directed setae. Metepisternum with setae on posterior part. Haltere pale yellow.

Legs: &R[DH \HOORZ.)HPRUD \HOORZ, H[FHSW KLQG IHPXU EURZQ RQ DSLFDO ¿IWK DQG narrowly along dorsal margin. Tibiae yellow. Tarsi appear brownish due to dark setae.: KROH DQWHULRU VLGH RI IRUH FR[D, DSLFDO ¿IWK RI DQWHULRU VLGH RI PLG FR[D DQG DOO IHPRUD clothed in dark setae. Hind coxa with dense light setae on posterior side. Mid femur with 1–3 apicoventral bristles, hind femur with 3–5 apicoventral bristles progressively shorter towards apex. Mid tibia with 3–4a, 6d (progressively longer towards apex), 4–5p (progressively longer towards apex) and 2v. Hind tibia with 7a and 6d. Proportions of femur to tibia for fore, mid and hind legs: 1.11–1.27, 1.19 [1.27]; 0.97–1.03, 1.01 [1.03]; 0.78–0.85, 0.81 [0.85]. Proportions of tibia to basitarsus for fore, mid and hind legs: 1.05–1.23, 1.14 [1.05]; 1.40–1.42, 1.41 [1.41]; 1.67–1.71, 1.69 [1.71].

Wing: Wing length 2.35–2.77, 2.53 [2.46] mm. Membrane with yellowish tinge, veins dark yellow to brownish. A vague brown macula above Rs and rm; very faint preapical macula from tip of R 1 towards M 1, but not including tip of R 5. R 1 and R 5 with strong setae, crossvein rm and bM–Cu with weaker setae on both sides. M 1 with 9–13 and M 2 with 3–10 apical setae. CuA glabrous. Crossvein rm 0.7× as long as m -stem.

Abdomen: %URZQ ZLWK ¿UVW IRXU VHJPHQWV OLJKWHU.7HUPLQDOLD ()LJV Í5±Í8, ƻ³, ƻ7) \HOORZ. Ventroapical margin of gonocoxite with abrupt medial indentation of ca ѿ JRQRFR[LWH height. Gonostylus undivided into appendages. Ventroapical margin of gonostylus with URZ RI ¿QH VHWDH.$ VKRUW YHQWUREDVDO PHGLDOO\-GLUHFWHG SURFHVV EHDULQJ ƻ DSLFDO DQG Í basal setae.A geniculate, irregularly tapering blunt macroseta situated above the process and a twisted membranous short lobe posterior to macroseta. The latter exposed only in lateral or posterior view. Dorsal part of gonostylus with protruding apical process somewhat bent mesad and a sub-basal short internal hump-like lobe bearing apical setae. Aedeagus with two pointed apical outgrowths slightly bent mesad; parameres broad, curved with angular apices.

Female. Unknown.

+RORW\SH: ƃ 8*$1'$:. LEDOH 13 ,.DQ \ DZDUD %LRO. 6W., ƟƟ°³³‵54.ƻ"1 ³Ɵ°ƻÍ‵³Í.³"(, Í5ͳ P, ƻ9. YLLL ± 5.ix.2010, O. Kurina & co, Malaise trap ( No 4).

3DUDW\SHV:ƃ VDPH DV KRORW \SH,H[ FHSW ͳ ±ƻƟ.YL.ƻƟÍƟ; ƃ VDPH DV KRORW \SH,H[ FHSW ƟƟ°³³‵54.Í"1 ³Ɵ°ƻÍ‵ƻ8.Í"(, 1504 m, 28.iii–4.iv.2010, O. Kurina & co, Malaise trap (No 1).

Biology: Unknown.

Figures

Figs 3–6.NewAfrotropical Zygomyia species,males,habitus: (3) Z. mollemani sp. n.; (4) Z. simiensis sp.n. (terminalia removed); (5) Z. toro sp. n.; (6) Z. yllae sp. n. Scale bar = 1 mm.

Figs 15–18. Zygomyia toro sp. n., male terminalia: (15) ventral view; (16) dorsal view; (17) lateral view; (18) internal view of gonostylus. Scale bars = 0.1 mm.

Figs 23, 24. Ventrobasal macroseta on gonostylus, posterior view: (23) Zygomyia toro sp. n.; (24) Z. yllae sp. n. Scale bars = 0.01 mm.

Figs 25–28.Aedeagal complex, dorsal view: (25) Zygomyia mollemani sp. n.; (26) Z. simiensis sp. n.; (27) Z. toro sp. n.; (28) Z. yllae sp. n. Scale bar = 0.1 mm.