Zygomyia simiensis, 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 : 211-213

Zygomyia simiensis sp. n.

Figs 4 , 11–14 , 26

Etymology: From the type location, the Simien Mountains.

Differential diagnosis: Distinguished from all known Afrotropical Zygomyia species by the unique gonostylus ( Fig. 14 ). Most similar to Z. yllae sp. n., but can be distinguished by the following characteristics: scape and coxae entirely yellow (entirely and basally brownish in Z. yllae sp. n., respectively); wing membrane lacking dark markings; ventroapical indentation of gonocoxite slopes gradually ( Fig. 11 ).

Description:

Male.

Head: Dark brown with numerous dark setae. Two ocelli close to eye margins. Clypeus brown, lighter than head. Mouthparts yellow. Palpus with all segments yellow, apical segment slightly paler, ratios of three apical segments 1.0:1.25:2.63. Scape and SHGLFHO \HOORZ, ¿UVW ÀDJHOODU VHJPHQW \HOORZ RQ EDVDO KDOI, RWKHU ÀDJHOORPHUHV EURZQ.)ODJHOORPHUHV F\OLQGULFDO, PHGLDQ ÀDJHOORPHUH Í.9î DV ORQJ DV EURDG,DSLFDO ÀDJHOORPHUH conical, 3.0× as long as broad basally. Scape with setae, including 2 dorsoapical bristles, extending to middle of pedicel. Pedicel with apical crown of setae and dorsoapical bristle H[WHQGLQJ WR DSH[RI ¿UVW ÀDJHOORPHUH.)ODJHOORPHUHV ZLWK VKRUW ZKLWLVK VHWDH.

Thorax: Mesonotum brown. Pleural parts light brown, except anepisternum darker on dorsal part, laterotergite darker on hind margin and anepimeron lighter on lower part. All bristles and setae on thorax brown. Scutellum with 4 strong marginal bristles. Antepronotum with setae, including 6 bristles of different lengths. Proepisternum with setae including 3 strong bristles. Anepisternum with several posteriorly-directed short setae and 6 bristles of different lengths on dorsal part. Anepimeron with 3 bristles on dorsal part. Laterotergite with dorsally-directed weak setae. Metepisternum with setae on posterior part. Haltere pale yellow.

Legs: $OO FR[DH HQWLUHO\ \HOORZ. +LQG IHPXU EURZQ LQ DSLFDO ¿IWK, GRUVDO PDUJLQV RI all femora narrowly brown. Tibiae and tarsi appear darker, due to dense brown setation. Whole anterior side of fore coxa, apical fourth of anterior side of mid coxa and all femora clothed in dark setae. Hind coxa with sparse setae on posterior side. Mid femur with 2 apicoventral bristles, hind femur with 3 apicoventral bristles progressively shorter towards apex. Mid tibia with 3a, 4d (progressively longer towards apex), 3p and 1v. Hind tibia with 6a and 4d. Proportions of femur to tibia for fore, mid and hind legs: 1.04, 0.96, 0.85. Proportions of tibia to basitarsus for fore, mid and hind legs: 1.02, 1.25, 1.33.

Wing: Wing length 3.20 mm. Membrane with brownish tinge but without distinct markings. Veins light brown. R 1 and R 5 with strong setae on both sides. Crossvein rm and bM–Cu glabrous. M 1 with 19, M 2 with 12 and CuA 1 with 7 apical setae on dorsal surface. Crossvein rm 0.7× as long as m -stem.

Abdomen: 'DUN EURZQ ZLWK ¿UVW WZR VHJPHQWV VRPHZKDW OLJKWHU. 7HUPLQDOLD ()LJV 11–14, 26) yellow. Ventroapical margin of gonocoxite with medial wide indentation, about one fourth of gonocoxite height. Ventral part of gonostylus with well sclerotised spine-like bristles along apical margin and 2 sub-basal bristles medially-directed. Medial part of gonostylus somewhat tapering with an apical bristle and subapical blunt spine, both exposed in internal or posterior view. Dorsal parts of gonostylus apically bifurcate: medial branch glabrous, tapering and somewhat medially-directed; lateral branch bearing a group of apical bristles.Aedeagus with apical broadening, bearing two pointed apicomedial outgrowths; parameres narrow with angular apices.

Female. Unknown.

+RORW\SH: ƃ (7+,23,$: 6LPLHQ 0WV, &DPSLQJ &KHQHN, ͳ°Í5‵³8.ƻ"1 ³8°ÍÍ‵³Ϭ.7"(, ³ϬÍ7 P, ƻϬ.[.ƻƟÍƟ, O. Kurina & Ü. Jäe, sweep netting.

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 11–14. Zygomyia simiensis sp. n., male terminalia: (11) ventral view; (12) dorsal view; (13) lateral view; (14) internal view of gonostylus. Scale bars = 0.1 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.