Aphanogmus dimidiatus, 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 : 75-79

Aphanogmus dimidiatus sp. nov.

urn:lsid:zoobank.org:act:7D040F3C-4368-47D4-85FC-FE92E19EF9A1

Fig. 20

Diagnosis

Head height 1.44–1.52× (1.44) maximum eye diameter. Male genitalia: harpe bilobed; ventral and dorsolateral lobe finger-shaped in lateral view; harpe/gvc index 0.63; dorsolateral lobe/ventral lobe index 0.86; dorsolateral length of harpe/harpe index 0.96; dorsomedial margins of harpes not touching at distodorsal margin of gvc, dorsomedial margin of harpe convex from base to apex; distolateral margin of gvc strongly descending dorsally; lateral setae on dorsolateral lobe oriented distodorsally and distolaterally; genitalia strongly sclerotized with strongest sclerotization at aedeagus + gonossiculus; aedeagus + gonossiculus with at least two distinct digital teeth, oriented dorsally.

Etymology

The species name is derived from the Latin word ‘ dimidiatus ’ which means ‘halved/bisected’, with reference to the harpe being divided into two lobes.

Material examined

Holotype

KENYA • ♂; Western Province, Kakamega Forest; 00°21′7.9 N, 34°52′2.6 E; 1597 m a.s.l.; 2 Jul. 2007; F. Hita Garcia leg.; Transect 7; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK- HYM-00037019 .

Paratypes

KENYA – Western Province • 1 ♂; Kakamega Forest; 00°19′36 N, 34°52′14.6 E; 1570 m a.s.l.; 2007; F. Hita Garcia leg.; Transect 6; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK- HYM-00034437 • 2 ♂♂; same collection data as for holotype; ZFMK-HYM-00034438 , ZFMK- HYM-00034439 • 1 ♂; same collection data as for holotype; 9 Jul. 2007; ZFMK-HYM-00034440 • 1 ♂; Kakamega Forest; 00°19′49.9 N, 34°52′16.1 E; 1580 m a.s.l.; 1 Aug. 2007; F. Hita Garcia leg.; Transect 15; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK-HYM-00034441 • 1 ♂; Kakamega Forest; 00°19′45.7 N, 34°52′2.8 E; 1573 m a.s.l.; 7 Aug. 2007; F. Hita Garcia leg.; Transect 21; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK-HYM-00034442 • 1 ♂; Kakamega Forest; 00°14′6.1 N, 34°52′9.2 E; 1605 m a.s.l.; 4 Sep. 2007; F. Hita Garcia leg.; Transect 23; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK-HYM-00034443 • 1 ♂; Kakamega Forest; 00°20′52.5 N, 34°51′53 E; 1611 m a.s.l.; 6 Sep. 2007; F. Hita Garcia leg.; Transect 25; primary rain forest; Winkler leaf litter extraction; ZFMK; ZFMK-HYM-00034444 .

Description

Male (N = 3 in morphometric measurements)

BODY LENGTH. 0.86–1.13 mm (0.86 mm).

COLOUR. Head brown, mesosoma brown, metasoma brown; scape and pedicel light brown-yellowish, flagellum light brown; legs yellowish except pro- and mesocoxa light brown; fore wing venation light brown, fore and hind wing disc slightly melanized, fore wing at proximal part less melanized.

ANTENNA. 11-segmented, flagellomeres trapezoidal; scape 4.0× as long as pedicel, scape longer than F1 and F2 combined, F1 3.0× as long as wide, F1 2.0 × as long as pedicel, F1 1.3 × as long as F2, F1 shorter than F7 and F8 combined, F1 shorter than F9, F6 1.8× as long as wide, F6 shorter than F7 and F8 combined, F6 1.3× as high as F9; numerous distinctly small multiporous plates on flagellomeres, sensillae on flagellomeres erect and sickle-shaped and longer than width of F1 to F4.

HEAD. Head width 1.13–1.20 × (1.17) head height; head width 1.91–2.04 × (1.91) interorbital space; maximum eye diameter 1.20–1.39 × (1.39) minimum eye diameter; head height 1.44–1.52 × (1.44) maximum eye diameter. Dorsal margin of occipital carina ventral to dorsal margin of lateral ocellus in lateral view; preoccipital furrow present; preoccipital carina distinct. OOL:POL:LOL 1.00:0.79– 1.00:0.75–1.00 (1.00:0.79:0.75); OOL 1.38–1.58× (1.56) lateral ocellus diameter. White, thick setae on upper face absent; supraclypeal depression present; lateral margin of torulus raised; intertorular carina present; posterolateral processes of gena absent.

MESOSOMA, METASOMA. Mesosoma compressed laterally. Head width 1.20–1.23 × (1.20) mesosoma width; Weber length 288–363 µm (288 µm). Mesoscutum densely setose, setae curved backwards; median mesoscutal sulcus present; median mesoscutal sulcus adjacent to transscutal articulation; interaxillar sulcus present (= 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 1.94–2.27× (2.27) mesoscutellum width; posterior mesoscutal width 1.53–1.67 × (1.67) mesoscutellum width; mesoscutellum length 1.67–1.93 × (1.93) mesoscutellum width; mesoscutellum length 1.06–1.16 × (1.16) posterior mesoscutal width; Weber length 1.35–1.45× (1.35) mesoscutum width; Weber length 1.59–1.66× (1.59) mesoscutellum length. Anteromedian projection of the metanoto-propodeo-metapecto-mesopectal complex straight and transparent in lateral view with pointed end, extending to end of mesosoma; mesometapleural sulcus absent; posterior propodeal projection straight and light in ventrolateral view; posterior mesosomal comb absent. Basal transverse carina of petiole (on syntergum) present; short basal longitudinal carinae on syntergum; translucent patches on metasoma absent.

FORE WING. Length 2.92–3.09 × (3.09) width; stigmal vein longer than 2× pterostigma marginal length.

MALE GENITALIA. Genital length 181–206 µm (188 µm); Weber length 1.53–1.76 × (1.53) genital length; gvc width 69–78 µm (69 µm); genital length 2.64–2.73 × (2.73) gvc width; gvc width less than two thirds of gvc length; gvc width 1.40 × distal gvc width. Proximodorsal margin of gvc convex; distodorsal margin of gvc descending proximomedially ( Fig. 20C ); proximoventral margin of gvc concave; distoventral margin of gvc descending proximomedially ( Fig. 20A ); ventral area of gvc convex; dorsal area of gvc convex ( Fig. 20B ); proximolateral margin of gvc strongly ascending ventrally; distolateral margin of gvc strongly descending dorsally ( Fig. 20B ). Harpe bilobed; ventral and dorsolateral lobe finger-shaped in lateral view; harpe/gvc index 0.63; dorsolateral lobe/ventral lobe index 0.86; dorsolateral length of harpe/harpe index 0.96; lateral articulation site of harpe with gvc flush ( Fig. 20A, C ); ventral margin of harpe slightly convex, dorsal margin slightly convex ( Fig. 20B ), lateral margin slightly concave, widest point of harpe at lateral articulation site with gvc ( Fig. 20A, C ); dorsomedial margins of harpes not touching at distodorsal margin of gvc, dorsomedial margin of harpe convex from base to apex ( Fig. 20C ), apices of ventral and dorsolateral lobe slightly pointed, slightly oriented distolaterally ( Fig. 20A, C ). Harpe with at least two lateral setae on dorsolateral lobe restricted to apical quarter, longest lateral setae more than one third as long as harpe, lateral setae oriented distodorsally and distolaterally; harpe with at least one apical seta on dorsolateral lobe, longest apical seta on dorsolateral lobe less than one quarter as long as harpe, apical seta on dorsolateral lobe oriented distolaterally and distoventrally; harpe with at least one apical seta on ventral lobe, longest apical seta on ventral lobe less than one quarter as long as harpe, apical seta on ventral lobe oriented distolaterally and distoventrally; indistinct number of median setae on ventral lobe, longest median setae less than one quarter as long as harpe, median setae with indistinct orientation. Aedeagus + gonossiculus more than three quarters as long as harpe, apex of aedeagus + gonossiculus divided ( Fig. 20A, C ) and dorsal to apex of dorsolateral lobe of harpe. Aedeagus + gonossiculus with at least two distinct digital teeth, oriented dorsally. Genitalia strongly sclerotized with strongest sclerotization at aedeagus + gonossiculus.

Female

Unknown.

Variation

The pedicel of ZFMK-HYM-00034437, ZFMK-HYM-00034438 and ZFMK-HYM-00034439 is concolourous with the light brown flagellum and darker than the yellowish scape.

Biology

Host unknown, specimens collected from leaf litter.

Distribution

Afrotropical: Kenya.

Remarks

Comparison with similar species

See remarks under A. ngai sp. nov.

Condition of type material

In the holotype, the left hind wing is detached.

Figures

Fig. 20. Holotype of Aphanogmus dimidiatus sp. nov. (ZFMK-HYM-00037019). A–C. Male genitalia in ventral (A), lateral (B) and dorsal (C) views. D. Habitus in dorsolateral view; inset: habitus in lateral view.