Aphanogmus idakho, Salden & Peters, 2023

Salden, Tobias & Peters, Ralph S., 2023, Afrotropical Ceraphronoidea (Insecta: Hymenoptera) put back on the map with the description of 88 new species, European Journal of Taxonomy 884 (1), pp. 1-386 : 26-28

Aphanogmus idakho sp. nov.

urn:lsid:zoobank.org:act:6D891460-A1A1-42AF-9A17-76A71D9AC3D8

Fig. 4

Diagnosis

Scape slightly shorter than F1 and F2 combined; F6 2.2× as long as wide; mesoscutum width 1.67 × mesoscutellum width; posterior mesoscutal width 1.24× mesoscutellum width; distinct pairs of translucent patches on metasomal syntergum and synsternum. Male genitalia: harpe finger-shaped apicoventrally in ventral and dorsal view and broadened with plateau on apex in lateral view; harpe/gvc index 0.37; ventromedial margins of harpes not touching at distoventral margin of gvc, ventromedial margin of harpe concave in basal three quarters, straight and diverging distolaterally in apical quarter; ventral margin of harpe straight, dorsal margin indistinct in basal part, strongly concave in apical half, lateral margin slightly convex and oriented distomedially in basal half, slightly concave and oriented distomedially in apical half.

Etymology

The species is named after the Idakho community, which live primarily in the Kakamega District.

Material examined

Holotype

KENYA • ♂; Western Province, Kakamega Forest; 00°12′42.6 N, 34°55′52.3 E; 1615 m a.s.l.; 16 Aug. 2007; F. Hita Garcia leg.; Transect 20; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK- HYM-00037034 .

Description

Male

BODY LENGTH. 0.85 mm.

COLOUR. Head brown, mesosoma brown, metasoma light brown; scape, pedicel and flagellum light brown, gradually darkening from F1 to F9; legs light brown except joints and tarsi lighter; fore wing venation light brown, fore and hind wing disc hyaline and weakly melanized.

ANTENNA. 11-segmented, flagellomeres trapezoidal; scape 4.4 × as long as pedicel, scape slightly shorter than F1 and F2 combined, F1 3.0 × as long as wide, F1 2.4× as long as pedicel, F1 1.2 × as long as F2, F1 shorter than F7 and F8 combined, F1 shorter than F9, F6 2.2× as long as wide, F6 shorter than F7 and F8 combined, F6 1.1× as high as F9; numerous small multiporous plates on flagellomeres, sensillae on flagellomeres erect and longer than width of flagellomeres.

HEAD. Head width 1.23 × head height; head width 1.54 × interorbital space; maximum eye diameter 1.25 × minimum eye diameter; head height 1.75 × maximum eye diameter. Dorsal margin of occipital carina ventral to dorsal margin of lateral ocellus in lateral view; preoccipital furrow indistinct; preoccipital carina present. OOL:POL:LOL 1.00:1.29:0.71; OOL 1.75 × lateral ocellus diameter. White, thick setae on upper face absent; supraclypeal depression present; lateral margin of torulus slightly raised; intertorular carina present; posterolateral processes of gena absent.

MESOSOMA, METASOMA. Mesosoma compressed laterally. Head width 1.13 × mesosoma width; Weber length 281 µm. Mesoscutum densely setose, setae curved backwards; median mesoscutal sulcus absent; interaxillar sulcus superficial, scutoscutellar sulcus not adjacent to transscutal articulation, scutoscutellar sulcus straight; dorsal axillar area setose, setae curved backwards; mesoscutellum setose, setae curved backwards or straight. Mesoscutum width 1.67× mesoscutellum width; posterior mesoscutal width 1.24 × mesoscutellum width; mesoscutellum length 1.52 × mesoscutellum width; mesoscutellum length 1.23 × posterior mesoscutal width; Weber length 1.29 × mesoscutum width; Weber length 1.41 × mesoscutellum length. Anteromedian projection of the metanoto-propodeo-metapecto-mesopectal complex absent; mesometapleural sulcus absent; posterior propodeal projection absent; posterior mesosomal comb absent. Basal transverse carina of petiole (on syntergum) absent; longitudinal carinae on syntergum absent; distinct pairs of translucent patches on metasomal syntergum and synsternum.

FORE WING. Length 2.60 × width; stigmal vein as long as pterostigma marginal length.

MALE GENITALIA. Genital length 106 µm; Weber length 2.65 × genital length; gvc width 69 µm; genital length 1.55× gvc width; gvc width more than three quarters of gvc length; gvc width 1.13 × distal gvc width. Proximodorsal margin of gvc strongly convex; distodorsal margin of gvc indistinct ( Fig. 4C ); proximoventral margin of gvc strongly ascending distomedially; distoventral margin of gvc ascending proximomedially ( Fig. 4A ); ventral area of gvc slightly convex; dorsal area of gvc convex ( Fig. 4B ); proximolateral margin of gvc concave and strongly ascending ventrally; distolateral margin of gvc indistinct ( Fig. 4B ). Harpes finger-shaped apicoventrally in ventral and dorsal view and broadened with plateau on apex in lateral view; harpe/gvc index 0.37; lateral articulation site of harpe with gvc flush ( Fig. 4A, C ); ventral margin of harpe straight, dorsal margin indistinct in basal part, strongly concave in apical half ( Fig. 4B ), lateral margin slightly convex and oriented distomedially in basal half, slightly concave and oriented distomedially in apical half, widest point of harpe at lateral articulation site with gvc ( Fig. 4A, C ); ventromedial margins of harpes not touching at distoventral margin of gvc, ventromedial margin of harpe concave in basal three quarters, straight and diverging distolaterally in apical quarter ( Fig. 4C ), apex of harpe pointed ( Fig. 4A, C ). Harpe with at least one indistinct short lateral seta; harpe with at least one ventral seta, longest ventral seta more than one third as long as harpe, ventral seta oriented distolaterally and distoventrally; harpe with at least three apical setae, longest apical setae less than one quarter as long as harpe, apical setae oriented distodorsally, distolaterally and distoventrally. Aedeagus + gonossiculus indistinct. Genitalia strongly sclerotized with strongest sclerotization at aedeagus + gonossiculus and at apical part of the harpe.

Female

Unknown.

Variation

Unknown.

Biology

Host unknown, specimen collected from leaf litter.

Distribution

Afrotropical: Kenya.

Remarks

Comparison with similar species

Aphanogmus idakho sp. nov. can be distinguished from all other treated species of the clavicornis species group by the very distinct pairs of translucent patches on the metasomal syntergum and synsternum.

Condition of type material

In the holotype, the right flagellum and the left middle leg (except coxa) are missing. The metasoma is deformed, thus the body length measurement is not precise.

Figures

Fig. 4. Holotype of Aphanogmus idakho sp. nov. (ZFMK-HYM-00037034). A–C. Male genitalia in ventral (A), lateral (B) and dorsal (C) views. D. Habitus in lateral view; inset: habitus in dorsal view.