Ectyphus amboseli, Lyons, Kathleen M. & Dikow, Torsten, 2010

Lyons, Kathleen M. & Dikow, Torsten, 2010, Taxonomic revision of Ectyphus Gerstaecker, 1868 and Parectyphus Hesse, 1972 with a key to world Ectyphinae (Insecta, Diptera, Mydidae), ZooKeys 73, pp. 25-59 : 29-30

Ectyphus amboseli sp. n. Figs 13 –411– 13

Etymology:

Noun in apposition that refers to the type locality Amboseli Lodge, Kenya.

Diagnosis:

The species is distinguished from congeners by the yellow colour and pubescence of the thorax (Fig. 3), the yellow abdominal sternites (Fig. 3), and its apparent distribution in Kenya (Fig. 1).

Description male:

Head: brown, facial gibbosity yellow, in general grey pubescent; width distinctly greater than thorax, interocular distance on vertex larger than at ventral eye margin, vertex between compound eyes slightly depressed, parafacial area very narrow, facial gibbosity nearly touching median eye margin; facial gibbosity distinct, well-developed and discernible in lateral view; mystax white, covering entire facial gibbosity; frons entirely grey pubescent, vertex medially apubescent, laterally grey pubescent, postgena white pubescent; setation: vertex white, frons white, ocp setae white, pocl setae white; ocellar triangle apubescent; proboscis brown, short, about ½ length of oral cavity; labellum small, as wide as prementum, as long as prementum, unsclerotised laterally; maxillary palpus cylindrical, light brown, about ½ length of proboscis.

Antenna: brown, scape and pedicel white setose dorsally and ventrally; postpedicel cylindrical in proximal ½, symmetrically bulbous in distal ½, ≥ 6.0 times as long as combined length of scape and pedicel; apical ‚seta-like‘ sensory element situated apically in cavity on postpedicel.

Thorax: yellow, predominantly yellow pubescent; scutum yellow, broad brown median presutural stripe and brown paramedial postsutural stripes, surface entirely smooth, predominantly yellow pubescent, paramedial and sublateral stripes apubescent, scutal setation comprised of distinct rows of short dorsocentral setae and lateral scutal setae; dc setae pre- and postsuturally white, acr setae absent, lateral scutal setae white, npl, spal, and pal setae absent; postpronotal lobe yellow, partly white pubescent; proepisternum, lateral postpronotum, and postpronotal lobe long white setose; scutellum apubescent, asetose medially, laterally yellow setose, apical scutellar setae absent; mesopostnotum, anatergite, and katatergite silver pubescent, asetose; katatergite elevated and smoothly convex; anterior anepisternum asetose, supero-posterior anepisternum asetose; posterior anepimeron long white setose, katepimeron asetose; metepimeron evenly elevated, same colour as T1, silver pubescent, asetose; metepisternum silver pubescent, asetose.

Leg: yellow, setation predominantly white; pro, mes, and met coxa grey pubescent, white setose; met trochanter macrosetose medially; femur yellow, met femur evenly clubbed in distal ¾, in distal ½ macrosetose, 1 antero-ventral and 1 postero-ventral row of macrosetae; pro, mes, and met tibia straight, met tibia cylindrical with distinct ventral keel terminating into a sharp spine; pro and mes tarsomere 1 longer than tarsomere 2, but less than combined length of tarsomeres 2-3, met tarsomere 1 as long as combined length of tarsomeres 2-3; pulvillus well-developed, as long as well-developed claw, and as wide as base of claw; empodium absent.

Wing: length = 9.8-10.3 mm; hyaline throughout, veins light brown, microtrichia absent; cells r1, r4, r5, m3, + cup closed; C well-developed, around entire wing; R4 terminates in R1; R5 terminates in R1; stump vein (R3) at base of R4 present, short not reaching R2; R4 and R5 widest apart medially; r-m distinct, R4+5 and M1 apart, connected by crossvein; M1 straight at r-m (not curving anteriorly), M1 (or M1+M2) terminates in C; CuA1 and CuA2 split proximally to m-cu (cell m3 narrow proximally); M3+CuA1 terminate together in C; A1 undulating, cell a1 wide, A1 and wing margin further apart proximally than distally; alula well-developed; halter light yellow.

Abdomen: brown and yellow; setation comprised of scattered white setae, surface entirely smooth; T1-7 brown, yellow posterior margin; T1 long white setose, T2-T3 sparsely white setose; T predominantly apubescent; S1-7 yellow; S1 asetose, S2-3 sparsely white setose; S predominantly apubescent; T2-4 parallel-sided and not constricted waist-like; bullae on T2 black, transversely elongate, surface entirely smooth, T2 surface anterior to bullae smooth.

Male terminalia: T1-7 well-developed, entirely sclerotised, T8 postero-medially weakly sclerotised, with anterior transverse sclerotised bridge connecting lateral sclerites; T7-8 anteriorly with 2 lateral apodemes; S6 regular, without any special setation postero-medially, S8 well-developed and simple, fused to T8 dorso-laterally, entire (undivided) ventro-medially; epandrium formed by single sclerite (fused medially ± entirely), pointed postero-laterally; subepandrial sclerite without lateral or median protuberances; hypandrium ± flat, rectangular to square sclerite, entirely fused with gonocoxite, forming a gonocoxite-hypandrial complex; gonocoxite dorso-ventrally flattened in distal ½, higher in proximal ½, with palp-like lateral appendage, gonocoxal apodeme present, short (at most slightly extending hypopygium anteriorly); 1 functional aedeagal prong, aedeagal epimere absent; lateral ejaculatory process absent; ejaculatory apodeme formed by single dorso-ventrally oriented plate; ventro-median margin of dorsal aedeagal sheath heavily sclerotised (appearing entirely closed); dorsal aedeagal sheath long, sperm sac entirely covered; sperm sac appearing ± heavily sclerotised.

Description female:

female unknown.

Material examined:

Kenya: Rift Valley Province: 3♂ 1? Amboseli Lodge, 2°39'59"S; 37°17'00"E, 28.ix.1972, W. Middlekauff (holotype AAM-000191, paratypes AAM-000190, AAM-000192-AAM-000193, CAS).

Type locality, distribution, and biodiversity hotspot:

Amboseli Lodge (2°39'59"S; 37°17'00"E), Kenya. Does not occur in any currently recognised biodiversity hotspot.