Dinapsis luteus Mita & Shaw, 2020

Mita, Toshiharu & Shaw, Scott Richard, 2020, A taxonomic study of Dinapsis Waterson, 1922 from Madagascar (Hymenoptera Megalyridae, Dinapsini): crested wasps of the hirtipes species-group, Zootaxa 4858 (1), pp. 71-84 : 77-80

Dinapsis luteus Mita & Shaw , n. sp.

Figs 1 , 7 , 24–31

Materials examined. Holotype: ♀, “CASENT/ 2053467”, “ MADAGASCAR: Toliara Prov / Parc National de Zombitse,/ 19.8 km 84°E Sakaraha / elev 770m 5–9 Feb 2003 ”, “ 22°50’36”S 044°42’36”E / coll. Fisher, Griswold et al./ California Acad. of Sciences / yellow pan trap, tropical dry/ forest coll. code: BLF7505”.

Paratypes: [ Madagascar] 1♀, Toamasina Prov., Mananara Nord National Park, 7.1 km 261° Antanambe , 16°27’18”S 049°47’15”E (225 m alt.), YPT, 16. XI. 2005, B.L.Fisher et al. leg .; 1♀, Toamasina Prov., Zahamena National Park, Tetezambatana forest , near junction of Nosivola and Manakambahiny Rivers , 17°44’35”S 048°43’46”E (860 m alt.), YPT, 18–19. II. 2009, B.L.Fisher et al. leg .; 1♀, d’Antananarivo Prov., 3km 41°NE from Andranomay, 11.5km 147° SSE from Anjozorobe , 18°28’24”S 47°57’36”E (1300 m alt.), MsT, 5–13. XII. 2000 Fisher, Griswold et al. leg .; 1♀, Fianarantsoa Prov., Ranomafana National Park , radio tower at forest edge, 21°15.05’S, 47°24.43’E (1130 m alt.), MsT, 7–17. VII. 2003, R. Harin’Haara leg. ; 1♀, Fianarantsoa Prov., Ranomafana National Park, Belle Vue at Talatakey , 21°15.99”S, 47°25.21’E (1020 m alt.), MsT, 22–28. XI. 2001, R. Harin’Hala leg.; 1♀, Toliara Prov., Zombitse National Park, 19.8 km 84°E Sakaraha, 22°50’36”S 044°42’36”E (770 m alt.), PfT, 5–9. II. 2003, Fisher, Griswold et al. leg.; 1♂, Toliara Prov., Ivohibe forest, 55.0km N of Tolagnaro 24°34’08”S 047°12’14”E ” (200 m alt.), MsT, 2–4. XII. 2006, B.L.Fisher et al. leg .

Description. (Female) Head ( Figs 26, 27 , 29 ) sparsely covered with short setae on frons and dorsal surface of vertex, long setae on posterior surface of vertex and gena; frons and vertex flat, with small scattered punctures; transversal elevation present on lower part of frons; outer margin of each ocellus bearing crescent-shaped depression; row of punctures present behind anterior ocellus, but sometimes indistinct; vertex produced dorsally forming carina, with posterior margin flat, rarely slightly concave medially; posterior surface of vertex reticulate rugose, sometimes only some irregular transversal carinae present; gena with small scattered punctures; orbital carina present around outer margin of eye; irregular suborbital carina present; clypeus smooth; POL: OOL: OL: OPL = 1.0: 1.5–1.6: 1.1–1.2: 1.0–1.2.

Mesosoma ( Fig. 25 ): Mesonotum sparsely covered with long erect setae; mesoscutum with scattered minute punctures; median sulcus forming deep continuous groove; anterior surface forming lateral carina; anterior margin flat, rarely slightly excavated; dorsal surface flat in lateral view; short depression of parapsides present; lateral lobe absent; axilla sparsely covered with small punctures, flat, axillae slightly separated medially; scuto-scutellar sulcus forming deep continuous groove; scutellum with small scattered punctures, weakly rounded; mesepimeron and ventral part of mesepisternum hairy; metanotum hairy; propodeum with paired longitudinal median, submedian and lateral carinae: carinae parallel; surface between longitudinal carinae transversely rugose, sometimes rugae indistinct; posterior margin of median region weakly producing dorsally; posterior strong transversal carina present on submedian and lateral regions.

Forewing entirely yellowish ( Figs 28, 29 ), sometimes hyaline ( Fig. 25 ) but at least veins yellowish, without dark area; vein M 1.51.7 × basal part of RS.

Hind coxa bearing longitudinal carina, dorsally striated, but rarely shagreened without striae; hind tibia smooth, sometimes shagreened; distal apex of hind tibia ( Fig. 7 ) not protruding, bearing simple setae.

Metasoma smooth but anterior surface of 6th and entire 7–8th metasomal tergites shagreened. Ovipositor 1.54– 1.74 × mesosoma length, apex bearing small teeth and single knob.

Color. Head reddish brown to black, at least lower part of frons, narrow strip around inner orbit of eye, malar space, clypeus and mandible paler; antenna testaceous to brown, apically darkened, rarely entirely pale. Mesosoma reddish brown to black, but at least prothorax partly paler, metanotum and propodeum always black. Legs brownish with trochanters whitish, hind coxa partly or mostly blackish, mid coxa and hind femur occasionally darkened. Metasoma brownish to dark brown; ovipositor and ovipositor sheath brown.

Measurements (in mm). Head 0.80–1.02 long, 0.96–1.14 wide; mesosoma 1.30–1.32 long; mesoscutum 0.80– 1.02 wide; propodeal disc 0.50–0.60 long, 0.74–0.90 wide; forewing 2.65–3.65 long; metasoma 1.56–2.00 long, 0.70–0.90 wide; ovipositor 2.00–2.30 long; total body length excluding ovipositor 3.02–3.74.

(Male) Differ from female as follows: anterior margin of mesoscutum distinctly excavated; median region of propodeum narrower than submedian region; posterior margin not produced dorsally; posterior transverse carina indistinct.

Distribution. Known from southern and eastern Madagascar ( Fig. 42 ): Toamasina Prov.; Antananarivo Prov.; Toliara Prov.; Fianarantsoa Prov.

Etymology. The species name is formed from the Latin word for yellow, referring to the pale yellow wing color.

Notes. Dinapsis luteus differs from D. hirtipes ( Figs 39–41 ) by lacking dark bands on the forewings ( Figs 24, 25 ). However, there are also some morphological differences from the holotype of D. hirtipes as follows: posterior margin of raised vertex ( Figs 26 , 29 , 30 ) and anterior margin of mesoscutum ( Fig. 25 ) are flat, at most slightly excavated medially (well excavated in D. hirtipes , Figs 40, 41 ); and the axillae ( Figs 25 , 29 ) are slightly separated from each other (abutting in the holotype of hirtipes , Fig. 41 ).

Figures

FIGURE 42. Distribution of Dinapsis hirtipes species-group.

FIGURES 1–6. SEM images of Dinapsis spp. 1, head in lateral view, D. luteus, n. sp., paratype male; 2, ditto, D. planifrons, n. sp., paratype female; 3, ditto, D. scriptus, n. sp., paratype female; 4, head in dorsal view, D. scriptus, n. sp., paratype female; 5, distal prong of hind tarsus with spatulate setae, D. planifrons, n. sp., paratype female; 6, ditto, simple setae, D. scriptus, n. sp., paratype female. Scale = 0.5 mm.

FIGURES 7–10. Hind tibiae of Dinapsis spp., female. 7, D. luteus, n. sp., holotype; 8, D. scriptus, n. sp., holotype (setae present on distal prong); 9, D. scriptus, paratype (seta lacking); 10, D. planifrons, n. sp., holotype. Scale = 0.5 mm.

FIGURES 24–27. Dinapsis luteus, n. sp., holotype female. 24, lateral habitus; 25, mesosoma in dorsal view; 26, head in dorsal view; 27, head in lateral view. Scale = 1.0 mm (24), 0.5 mm (25–27).

FIGURES 28–29. Dinapsis luteus, n. sp., paratype female. 28, lateral habitus; 29, head and mesothorax. Scale = 1.0 mm (28), 0.5 mm (29).

FIGURES 30–31. Dinapsis luteus, n. sp., paratype male. 30, head in dorsal view; 31, head in lateral view. Scale = 0.5 mm.

FIGURES 39–41. Dinapsis hirtipes Hedqvist, 1967, holotype female. 39, dorsal habitus; 40, head in dorsal view; 41, head and mesothorax in dorsal view. Scale = 1.0 mm