Subgulina kerzhneri Krivokhatsky, 1996

Zheng, Yuchen, Liu, Zijun, Zhang, Dong & Liu, Xingyue, 2024, Taxonomic notes on two antlion genera Holzezus Krivokhatsky, 1992 and Subgulina Krivokhatsky, 1996 (Neuroptera: Myrmeleontidae: Myrmecaelurini) from China, Zootaxa 5403 (2), pp. 256-268 : 264-265

Subgulina kerzhneri Krivokhatsky, 1996 克aeḡdzḇ

( Figs 2B ; 4 )

Subgulina kerzhneri Krivokhatsky, 1996: 315 (type locality: Mongolia: South-Gobi aymak, 60 km east of spring Talyin-Bilgakh- Bulak (Gurvantes County); holotype in ZISP). Stange, 2004: 283 ( Subgulina ). Krivokhatsky, 2011: 15 ( Subgulina ).

Diagnosis. Adult: Body pale brown with dark brown markings ( Fig. 2B ). Most pores on head, pronotum, mesonotum, and legs each suffused with a dot. Vertex anteriorly with a pair of dark brown spots and an indistinct transversal dark brown band; covered with short black and pale setae ( Fig. 4C ). Pronotum medially with a longitudinal dark brown stripe, anterolaterally with a pair of dark brown spots, laterally with a pair of corrugated brown stripes. Mesoprescutum dark brown with a pair of pale brown spots; mesoscutellum with a sagittal dark brown marking ( Fig. 4C ). Forewing costal space with a dark brown spot proximad pterostigma; posterior crossvein of hypostigmal cell corrugated; basal forked part of Cu suffused with an indistinct brown band; rhegam shaped as an indistinct brown spot; cubital area basally with an indistinct curved brown stripe, and an indistinct brown marginal band ( Fig. 4A ). Male gonocoxites 9 small, shaped as a pair of thick hook-like structure, rounded in lateral view ( Fig. 4H–L ). Female pregenital plate not protruded; gonocoxites 9 protruded with six to seven strong curved long digging setae ( Fig. 4F–G ).

Re-description of adult. Size. Head width: 2.26–2.45mm; forewing length: 16.58–17.23 mm; hindwing length: 16.12–16.96 mm.

Head. Vertex slightly raised, covered with some short black and pale setae, most pores each suffused with a black dot; anteriorly with a pair of dark brown spots and an indistinct transversal dark brown band. Scape and pedicel pale brown and brown; flagellum pale brown, each of flagellomere basally with a dark brown circular marking. Ocular rim setae present, pale and needle-like ( Fig. 4C ). Frons pale brown. Gena pale yellowish brown, wide. Male bears a rounded dark brown sac-like structure (“goitre”) from the gula. Clypeus pale yellowish brown with a pair of indistinct arched grey markings, covered with a few short dark brown setae. Maxillary palpus generally pale brown. Labial palpus generally pale yellowish brown, terminal segment swollen fusiform with a dark brown spot. Mandibles pale yellowish brown with distal half dark reddish brown ( Fig. 4B ).

Thorax. Pale brown with dark brown markings. Pronotum nearly as long as wide, with many short pale and black setae, most pores each suffused with a black dot, lateral margin with long pale setae; medially with a longitudinal dark brown stripe, anterolaterally with a pair of dark brown spots, laterally with a pair of corrugated brown stripes. Mesothorax dorsally covered with many short pale and black setae, most pores each suffused with a black dot; mesoprescutum dark brown with a pair of pale brown spots; mesonotum medially with a dark brown marking and lateral part generally dark brown; mesoscutellum with a sagittal dark brown marking. Metanotum medially with a dark brown spot and laterally with a pair of curved dark brown markings; metascutellum anteromedially dark brown. Meso- and metapleurae generally yellowish brown with some dark brown markings, covered with many short pale setae ( Fig. 4C ).

Legs. Brown and pale brown, with many pale setae and a few dark brown setae. All femurs dorsally dark brown, with many short thick pale setae and a few short black setae; tibia with many short pale setae and a few thick dark brown setae; tarsi yellowish brown each tarsomeres dark brown distally; tarsomere 1–4 each with a pair of spinelike dark brown setae; tarsomere 5 longer than entire length of tarsomeres 2–4 but shorter than length of tarsomeres 1–4; pretarsal claws slightly curved, basally protruded. Foreleg: Coxa pale yellowish brown, with many long and short thick pale setae; femur basally with a short black sensory hair, pores on femur and tibia each suffused with a black dot; tibia medially with a dark brown spot and distally dark brown; tibial spur reaching tip of tarsomere 1. Midleg: Coxa pale yellowish brown, covered with a few short pale setae, other characters similar to foreleg. Hind leg: Coxa pale yellowish brown, covered with a few short pale setae; tibia distally dark brown; tibial spurs shorter than tarsomere 1 ( Fig. 4A ).

Wings. Narrow; posterior margin relatively rounded; dark brown alternating with pale on longitudinal veins; pterostigma pale. Forewing costal space with a dark brown spot proximad pterostigma; basal forked part of Cu suffused with an indistinct brown band; rhegam shaped as an indistinct brown spot; cubital area basally with an indistinct curved brown stripe, and an indistinct brown marginal band; RP origin slightly distad MP and CuA fork; posterior crossvein of hypostigmal cell corrugated; four to six presectoral crossveins present; RP with six to seven branches. Hindwing slightly shorter than forewing; costal space with a dark brown spot proximad pterostigma; rhegma indistinct; two presectoral crossveins present; pilula axillaris absent ( Figs 2B ; 4A ).

Abdomen. Pale yellowish brown with dark brown markings; shorter than hindwing. Terga 2–7 each medially with a longitudinal dark brown stripe, laterally with a pair of dark brown stripes. Male without hairy pencil-like structure. Female sternum 7 truncated on distal margin, without digital projection. Male terminalia and genitalia. Tergum 9 subrectangular. Sternum 9 short, subrectangular in ventral view ( Fig. 4D–E ). Gonocoxites 9 small, shaped as a pair of thick hook-like structure, rounded. Gonocoxites 11 sagittal arched in ventral view; gonostyli 11 oblate in lateral view; gonapophyses 11 long wedge-shape, curved in lateral view ( Fig. 4H–L ). Ectoproct nearly trapezoidal in lateral view, posteroventral lobe slightly protruded, with many long setae ( Fig. 4D–E ). Female terminalia. Pregenital plate not protruded. Gonocoxites 8 slender, short digitiform, with a few long setae, one paired. Gonocoxites 9 protruded with six to seven curved long digging setae. Ectoproct truncated on distal margin, posteroventrally slightly protruded ( Fig. 4F–G ).

Material examined. 3♂ 7♀, CHINA: Hami, Yiwu County, Naomaohu Town , Yiwu National Desert Poplar Desert Park, 448 m, 27.VII.2023, Zhichao Zhou, Zijun Liu & Huaiyu Liu ( CAU) ; 3♂ 7♀, same information as above ( BFUC) . 1♀, CHINA: Xinjiang, Turpan, Toksun County, Kumux Town , Yengi Bostan Village , 872 m, 17.VII.2023, Zhichao Zhou, Zijun Liu & Huaiyu Liu ( CAU) .

Distribution. China (Inner Mongolia, Xinjiang); Mongolia (South Gobi).

Figures

FIGURE 2. Habitus. A. Holzezus compactus Krivokhatsky, 1992, male; B. Subgulina kerzhneri Krivokhatsky, 1996, female.

FIGURE 4. Subgulina kerzhneri Krivokhatsky, 1996. A. Part of habitus, female; B. head, frontal view, male; C. head and thorax, dorsal view, male; male terminalia: D. lateral view; E. ventral view; female terminalia: F. lateral view; G. ventral view; male genitalia: H. ventral view; I. anteroventral view; J. caudal view; K. lateral view; L. dorsal view.