Ebenia striaticollis ( Wulp 1891 ), 2024

Domingos, Marcelo, 2024, Revision of the Neotropical Obscure Genus Ebenia Macquart 1846 (Diptera, Tachinidae, Dufouriini), Neotropical Entomology 53 (4), pp. 833-853 : 846-848

Ebenia striaticollis ( Wulp 1891) comb. nov.

( Fig. 8 ).

Comyops striaticollis Wulp 1891: 262 . References. Guimarães 1971: 109, catalogue); O’Hara et al. (2020: 91, checklist of World Tachinidae ).

Type material examined Holotype ♂: “Holo-/ type”; “ ♂ ”; “ Venta de Zopilote,/ Guerrero, 2800 ft,/ Oct. H.H.S.”; “B.C.A. Dipt.II./ Comyops / striaticollis,/ v.d. W.”; “ Central America./ Pres. by/ F.D.Godman. / O.Salvin. / 1903–172.”; “ NHMUK 013933636 ” . Holotype in good condition.

The current combination for this species is Ebenia striaticollis ( Wulp 1891) comb. nov.

Diagnosis. Eyes with conspicuous setulae. Fronto-orbital plate silver pruinose. Postpedicel dark brown, but about ¼ dorsal light brown. Facial ridge with setulae present almost at the antennal insertion. Prosternum setulose. Thorax with silver pruinosity. Legs brownish to light brown. Wing hyaline; vein R 4+5 with setulae dorsally hallway to vein r-m. Costal spine poorly developed. Abdomen with silvery pruinosity on each tergite, almost reaching posterior margin.

Redescription of holotype male.

Coloration ( Fig. 8a–c ): Occiput with silver pruinosity. Head with silver pruinosity. Scape and pedicel brownish. Postpedicel light brown. Arista dark brown, but proximal 1/5 light brown. Palpus yellowish. Labellum light brown, prementum shiny black. Scutum brownish, but presutural region and anterodorsal portion of postsutural region with brownish-silvery pruinosity; presutural region with four brownish-black vittae, the two central ones narrow and the two peripheral ones broad. Wing hyaline. Calypters hyaline. Tegula and basicosta dark brown. Halter yellowish. Posterior spiracle light-brown. Legs brownish. Upper and lower calypters hyaline. Abdomen brownish, with brownish pruinosity reaching about halt the length of each tergite anteriorly.

Head ( Fig. 8a–c ): Vertex about 0.11×head width in dorsal view. Width of parafacial, measured at distance between inner margin of eye and antennal insertion, 2×height of gena. Fronto-orbital plate with setulae throughout its length. Frontal vitta narrowed dorsally. Eye about 0.76 ×the head height. Gena about 0.13 ×eye height. Prementum about 0.5×head height. Labellum developed, about 0.1x as long as prementum.

Thorax ( Fig. 8a, c ): Acrostichal setae 2 + 2. Dorsocentral setae 2 +3. Prosternum setulose. Anepisternum with one seat on anterior upward region. Wing. Costal spine poorly developed. Vein R 4+5 with setulae dorsally hallway to vein r-m and ventrally just at base. Legs. Fore femur with posterodorsal and posteroventral rows of setae; fore tibia with 1 posteroventral on distal third, 2 preapical, 1 anterodorsal and 1 posteroventral setae. Mid tibia with 4 anteroventral, 4 posteroventral setae on apical third, 6 anterodorsal seta on distal third; mid femur with anterodorsal setae on apical third, 2 preapical, and 2 posteroventral setae. Hind femur with 3 posterodorsal and 3 posteroventral and 2 preapicals, 1 anterodorsal and 1 posterodorsal setae.

Abdomen ( Fig. 8a, c ): Syntergite 1 +2 with mid-dorsal longitudinal depression extending until ½ to posterior margin. Syntergite 1 + 2 with at least 4 pairs of lateral marginal setae; tergite 3 with at least 4 pairs of lateral marginal setae and a pair of median marginal seta.

Female. Unknown.

Biology. Unknown.

Distribution. Mexico (Guerrero).

Figures

Fig. 8 Ebenia striaticollis (Wulp 1891), holotype male (NHMUK). A. Dorsal habitus. B. head, frontal view. C. lateral habitus. D. labels