Dipogon (Stigmatodipogon) luzon Loktionov, sp., 2020

Loktionov, V. M., 2020, Discovery of the subgenus Stigmatodipogon Ishikawa (Hymenoptera: Pompilidae: Dipogon Fox) in the Philippines, with description of a new species, Far Eastern Entomologist 414, pp. 11-15 : 12-14

Dipogon (Stigmatodipogon) luzon Loktionov, sp. n.

http://zoobank.org/NomenclaturalActs/ FC073F1D-3D1D-4C6C-9098-CF0D35BE4376

Figs 1–8

TYPE MATERIAL. Holotype – ♀, the Philippines: "N LUZON; KALINGA-AP./ ABRA

pr. boundary; Cordillera Centr.; around Pass at 1600± 100m; 17°30'N, 121°00'E; 26–28.III

2000, leg. L. Dembicky" [OLL].

DESCRIPTION. Female. Length: body 6.1 mm; fore wing 5.2 mm. Body black ( Figs 1,

2), with fore tarsi dark-brown. Body with sparse gray micropubescence. Upper frons with one short gray erect setae. Gena with few gray setae. Clypeus apically and mandible with long pale bristles. Propleura with 8 long pale setae. Propodeum postero-laterally with few short pale erect setae. Tergum 1 and sternum 1 with sparse short pale erect setae. Sternum 2

with few pale erect setae. Tergum 5 with many long brown bristles. Brush of setae on inner face of hind tibia is brown.

Head and mesosoma punctate and matte, metasoma micropunctate and somewhat polished. Frons densely punctate, intervals of punctures weakly polished. Clypeus apically with fine transverse striae distinctly impressed at median portion. Metapostnotum with inconspicous transverse striae.

Head width 1.1 × its length in frontal view. Vertex in frontal view barely convex ( Fig. 3 ),

its posterior margin barely arcuate in dorsal view ( Fig. 5 ). Inner orbits slightly convergent above and subparallel below ( Fig. 3 ). UID:MID:LID = 28:35:33. Frons in profile barely convex ( Fig. 4 ); frontal line indistinct. MID 0.56 × head width in frontal view. Gena width medially 0.67 × eye width in lateral view ( Fig. 4 ). Ocelli raised forming barely acute-angled triangle ( Fig. 5 ). POD:OOD = 0.8. Clypeus width 2.3 × its length, convex medially, depressed laterally; apicolateral corner rounded; apical margin straight ( Fig. 3 ). Labrum not exposed.

Malar space short and linear. Flagellomere 1 length 5.0 × its width, 1.3 × flagellomere 2 length,

and 0.83 × UID.

Pronotum with anterior declivity not differentiated from its dorsum. Discs of mesonotum,

mesoscutellum and metanotum barely convex. Metapostnotum length 0.27 × metanotum length medially. Propodeum evenly convex in profile, with antero-median groove. Tergum 1

with long petiole basally, sides of which subparallel in dorsal view ( Fig. 6 ).

Legs mostly without spines; mid and hind tibia with few very short rudimentary spines dorso-apically; longer spur of hind tibia 0.4 × hind tarsomere 1 length. Tarsal claws dentate,

with stout acute tooth preapically.

Wings ( Figs 7, 8 ) yellow, without distinct fasciae, except fore wing with more intensive yellow on SMC2, SMC3, and distal part of 2M. Fore wing ( Fig. 7 ) with pterostigma length

1.64 × SMC2 length (on vein M). SMC2 narrowed on vein Rs by 0.82 × its own length on vein M, receiving crossvein 1m-cu at basal 0.6. SMC3 length 1.2 × SMC2 length on vein M,

and 0.54 × on vein Rs, narrowed on vein Rs by 0.37 × its own length on vein M, receiving crossvein 2m-cu at basal 0.33. Crossvein 2rs-m barely arcuate. Crossvein 3rs-m curved at middle. Hind wing ( Fig. 8 ).

lateral view; 2 – habitus, dorsal view; 3 – head, frontal view; 4 – head, lateral view; 5 – head,

dorsal view; 6 – mesoscutellum, metanotum, metapostnotum, propodeum, and tergum 1, dorsal view; 7 – fore wing; 8 – hind wing. Scale bar: 1 mm for 1 and 2; 0.5 mm for 6, 7, and 8; 0.2

mm for 3–5.

Male is unknown.

DIAGNOSIS. The female of this new species can be easily separated from those of all congeners by the fore wing yellow, without fasciae ( Fig. 7 ). Other characters of importance are: clypeus and legs black ( Figs 1–3 ); frons densely punctate ( Fig. 3 ); tergum 1 with long petiole basally, sides of which subparallel in dorsal view ( Fig. 6 ).

DISTRIBUTION. The Philippines (Luzon).

BIOLOGY. Inhabits mountain forests at the altitude 1600 m.

ETHYMOLOGY. The new species is named after the type locality, Island of Luzon of the Philippines. Treat as a noun in apposition.

Figures

Figs 1–8. Dipogon (Stigmatodipogon) luzon Loktionov, sp. n., holotype, female: habitus,