Aphanogmus nikii, 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 : 106-110

Aphanogmus nikii sp. nov.

urn:lsid:zoobank.org:act:9471D89C-2316-40FB-A3FA-2254F064E06F

Fig. 29

Diagnosis

Scape slightly longer than F1 and F2 combined; F1 as long as F9; F6 as high as F9; mesoscutellum length 2.06–2.13 × (2.06) mesoscutellum width; mesoscutellum length 1.33–1.38× (1.38) posterior mesoscutal width; Weber length 1.44–1.71 × (1.71) mesoscutum width; Weber length 1.53–1.76 × (1.76) mesoscutellum length. Male genitalia: harpe bilobed; ventral lobe finger-shaped and dorsolateral lobe triangular in lateral view; harpe/gvc index 0.37; dorsolateral lobe/ventral lobe index 0.64; dorsolateral length of harpe/harpe index 0.85; dorsomedial margins of harpes converging and touching at distodorsal margin of gvc, dorsomedial margin of harpe convex and diverging distolaterally from base to apex; genitalia strongly sclerotized with strongest sclerotization at aedeagus + gonossiculus and harpe.

Etymology

The species is named after the son of the second author.

Material examined

Holotype

TANZANIA • ♂; Kilimanjaro Region, Mount Kilimanjaro; 3°11′11.1 S, 37°26′25.1 E; 2820 m a.s.l.; 6 Feb. 2012; KiLi project leg.; “tree 2”; FPD4, disturbed Podocarpus forest; Coloured pan trap; ZFMK; ZFMK-HYM-00037070 .

Paratype

TANZANIA • 1 ♂; Kilimanjaro Region, Mount Kilimanjaro; 3°11′23.5 S, 37°26′20.5 E; 2880 m a.s.l.; 17 Oct. 2012; KiLi project leg.; “low 3”; FPD3, disturbed Podocarpus forest; Coloured pan trap; ZFMK; ZFMK-HYM-00037071 .

Description

Male (N = 2 in morphometric measurements)

BODY LENGTH. 0.83–1.00 mm (1.00 mm).

COLOUR. Head brown, mesosoma brown, metasoma light brown; scape, pedicel and flagellum light brown; legs light brown except pro- and mesocoxa brown, proximal half of metacoxa 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 slightly longer than F1 and F2 combined, F1 2.8 × as long as wide, F1 2.2× as long as pedicel, F1 1.6 × as long as F2, F1 shorter than F7 and F8 combined, F1 as long as F9, F6 1.5× as long as wide, F6 shorter than F7 and F8 combined, F6 as high as F9; numerous distinctly small multiporous plates on flagellomeres, sensillae on flagellomeres erect and longer than width of F1 to F8.

HEAD. Head width 1.13–1.21 × (1.13) head height; head width 1.77–1.80 × (1.80) interorbital space; maximum eye diameter 1.21–1.22× (1.21) minimum eye diameter; head height 1.73–1.74 × (1.74) maximum eye diameter. Dorsal margin of occipital carina ventral to dorsal margin of lateral ocellus in lateral view; preoccipital furrow present; preoccipital carina present. OOL:POL:LOL 1.00:1.20– 1.70:0.80–1.10 (1.00:1.70:1.10); OOL 1.11–1.88 × (1.11) 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 1.28–1.29 × (1.29) mesosoma width; Weber length 306–363 µm (363 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 sparsely setose, setae curved backwards or straight. Mesoscutum width 2.13–2.27 × (2.13) mesoscutellum width; posterior mesoscutal width 1.50–1.60× (1.50) mesoscutellum width; mesoscutellum length 2.06–2.13 × (2.06) mesoscutellum width; mesoscutellum length 1.33–1.38 × (1.38) posterior mesoscutal width; Weber length 1.44–1.71 × (1.71) mesoscutum width; Weber length 1.53–1.76 × (1.76) mesoscutellum length. Anteromedian projection of the metanoto-propodeo-metapecto-mesopectal complex distinctly short, oriented posterodorsally in lateral view with pointed end; mesometapleural sulcus absent; posterior propodeal projection distinctly short 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 2.76 × (2.76) width; stigmal vein 2× as long as pterostigma marginal length.

MALE GENITALIA. Genital length 156–175 µm (175 µm); Weber length 1.96–2.07 × (2.07) genital length; gvc width 69 µm (69 µm); genital length 2.27–2.55× (2.55) gvc width; gvc width more than half of gvc length; gvc width 1.25× distal gvc width. Proximodorsal margin of gvc convex; distodorsal margin of gvc descending proximomedially ( Fig. 29C ); proximoventral margin of gvc concave; distoventral margin of gvc descending proximomedially ( Fig. 29A ); ventral area of gvc convex; dorsal area of gvc convex ( Fig. 29B ); proximolateral margin of gvc strongly ascending ventrally; distolateral margin of gvc descending ventrally ( Fig. 29B ). Harpe bilobed; ventral lobe finger-shaped and dorsolateral lobe triangular in lateral view; harpe/gvc index 0.37; dorsolateral lobe/ventral lobe index 0.64; dorsolateral length of harpe/harpe index 0.85; lateral articulation site of harpe with gvc not flush ( Fig. 29A, C ); ventral margin of harpe convex, dorsal margin convex ( Fig. 29B ), lateral margin slightly convex, widest point of harpe at apical third ( Fig. 29A, C ); dorsomedial margins of harpes converging and touching at distodorsal margin of gvc, dorsomedial margin of harpe convex and diverging distolaterally from base to apex ( Fig. 29C ), apex of ventral lobe pointed and apex of dorsolateral lobe rounded, oriented distolaterally ( Fig. 29A, C ). Harpe with at least two apical setae on dorsolateral lobe, longest apical setae on dorsolateral lobe one third as long as harpe, apical setae on dorsolateral lobe oriented distolaterally, distomedially and distoventrally; harpe with at least three apical setae on ventral lobe, longest apical setae on ventral lobe less than one quarter as long as harpe, apical setae on ventral lobe oriented distodorsally and distolaterally; 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 two thirds as long as harpe, apex of aedeagus + gonossiculus rounded ( Fig. 29A, C ) and dorsal to apex of dorsolateral lobe of harpe. Aedeagus + gonossiculus with at least two digital teeth, oriented dorsally. Genitalia strongly sclerotized with strongest sclerotization at aedeagus + gonossiculus and harpe.

Female

Unknown.

Variation

The body and male genitalia of ZFMK-HYM-00037071 are less strongly sclerotized compared to the holotype.

Biology

Host unknown, specimens collected with coloured pan trap.

Distribution

Afrotropical: Tanzania.

Remarks

Comparison with similar species Aphanogmus nikii sp. nov. is easily distinguished from all other treated species by its distinctly erect and long sensillae of the flagellomeres. The only resemblance of A. nikii with any other species of Aphanogmus is concerning the male genitalia of the Australian Aphanogmus nigripes Dodd, 1914 . However, next to the very different geographic distribution, the two species can be distinguished by the shapes of the (in both species distinctly bilobed) harpes in lateral view (dorsolateral lobe much broader and triangular in A. nikii , both lobes finger-shaped in A. nigripes ). In addition, the proportions of the flagellomeres, especially F1 and F9, differ between the species ( Dessart 1964).

Condition of type material

In the holotype, the right F5 to F9, the left fore leg (except coxa, trochanter, and femur), the left middle leg (except coxa), and the wings (except left fore wing) are missing. The eyes are deformed. The posterior half of the metasoma is deformed, thus the body length measurement is not precise.

Figures

Fig. 29. Holotype of Aphanogmus nikii sp. nov. (ZFMK-HYM-00037070). A–C. Male genitalia in ventral (A), lateral (B) and dorsal (C) views. D. Habitus in lateral view.