Carinostigmus frontirugatus Bashir & Ma sp. nov. Figs 2, 5a

Type material.

Holotype: ♀, China: Guizhou: Dabanshui Forest Park, 26°32'N, 106°45'E, 10.VII.2011, No. 201503448, coll. Dongdong Feng (YNAU). Paratypes: 1♀ same as holotype except: No. 201503452; 1♀, China: Yunnan: Renhe County, 22°57'N, 104°17'E, 3.X.2016, No. 201605802 (YNAU); 1♀, China: Yunnan: Mengla County: Shangyong: Huiqingzhai, 21°23'N, 101°28'E, 21.V.2005, coll. Peng Wang (YNAU).

Diagnosis.

This species is similar to C. iwatai (Tsuneki, 1954) in sharing: labrum pentagonal, round toward apex; free margin of clypeal lobe truncate medially (Fig. 2a); inter-antennal tubercle as long as midocellus diameter (Fig. 2b); upper frons with fine puncture; ocellar triangle nearly flat, with fine punctures, sparsely distributed; occipital carina narrowed, not foveolate (Fig. 2b); inner and outer-orbital sulcus broad as flagellomere 1 length (Fig. 2a); admedian line conspicuous (Fig. 2h); notaulus shallowly foveolate; parapsidal line conspicuous (Fig. 2e); mesopleuron with fine punctures, sparsely distributed, hypersternaulus broadened as midtibial width, conspicuously foveolate, scrobal sulcus foveate, short as mid trochanter length (Fig. 2d); propodeum strongly irregular reticulated ridged on propodeal enclosure and side, reticulates broad as Fig. 2i, with shiny interspace, propodeum with a smooth area posterodorsally; propodeum posterior surface with rectangular median groove, reticulate, a small smooth area medially, and irregular reticulation posteriorly (Fig. 2i); petiole side with few weak longitudinal carinae. Carinostigmus frontirugatus differs from C. iwatai by the following: clypeus moderately convex (Fig. 2a); inter-antennal tubercle distinctly broad at apex (Fig. 2b); median and lower frons rugose (Fig. 2a); upper frons longitudinal carina distinct, reaching anterior ocellus but weak (Fig. 2b); gena with dense, sturdy, oblique transverse rugae; lower gena with coarse punctures densely distributed; pronotal collar strongly elevated medially, lateral angles not so sharp as C. iwatai (Fig. 2e); scutum with several slender, transverse striations anteriorly (Fig. 2h); scutellum shiny; omaulus broadened as midtibial width (Fig. 2d); dorsal surface of petiole with dense weak longitudinal striations (Fig. 2c) and pygidial area punctate (Fig. 2g). Carinostigmus iwatai (Tsuneki) has following characters: clypeus slightly convex (Tsuneki 1954: fig. 12); inter-antennal tubercle not broad at apex (Tsuneki 1954: fig. 13); median and lower frons without rugae (Tsuneki 1954: fig. 12); upper frons longitudinal carina distinct anteriorly, not reaching anterior ocellus (Tsuneki 1954: fig. 12); gena with several sturdy, oblique transverse rugae near mandible area; lower gena with fine, sparsed punctures; pronotal collar not elevated medially, lateral angles sharp (Tsuneki 1954: fig. 10); scutum without transverse striations anteriorly; scutellum dull; omaulus narrowed; dorsal surface of petiole smooth and pygidial area punctate medially.

Description.

Female (Figs 2, 5a): Based on holotype, if any variation in paratypes described in square brackets.

Measurements.

BL: 6.2 [6-6.5] mm;

HW:HLD:HLF = 76:50:60;

HWmax:HWmin = 76:40;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 75:18:4:25:3:28:1:51;

AOD:WAS:IAD = 6:6:12;

POD:OOD:OCD:IODc:IODv:IODmin = 8:11:21:35:49:35;

LS:LP:LFI:WFI:LFII:WFII = 25:8:8:3:8:3;

LC:WC = 41:8;

PL:PW:LTI:WTI = 50:8:35:30.

Color pattern. Body black with shiny aspect, except the following: mandible medially (reddish brown apically), labrum, palpi, scape, pedicel, fore tibia and tarsus, mid tibia, trochanter and tarsus fulvous; flagellomeres dark brown [flagellomere I-II fulvous]; pronotal lobe whitish; tegula and forewing veins dark brown; hind trochanter reddish brown, tibia apically and tarsus dark brown; setae on margin of clypeus and on mandible pale.

Head. Mandible tridentate apically; setae on mandible sparse, long as pedicel length. Labrum pentagonal, round toward apex (Fig. 2a). Clypeus moderately convex, with coarse punctures, setae on margin of clypeus sparse, long as labrum length, free margin of clypeal lobe truncate medially (Fig. 2a). Median and lower frons rugose laterally, irregularly microstriate mesally, with a sturdy frontal median longitudinal carina, inter-antennal tubercle long, equal to midocellus diameter, distinctly broad at apex (Fig. 2a); upper frons with fine punctures, longitudinal carina distinct, reaching anterior ocellus but feeble (Fig. 2b), ocellar triangle nearly flat, with fine punctures, sparsely distributed (Fig. 2b); vertex behind ocelli shiny [dull], with fine sparsed punctures (Fig. 2b). Gena with dense sturdy transverse rugae, lower gena with coarse punctures. Occipital carina narrow, not foveolate (Fig. 2b); inner-orbital sulcus broad, with inner marginal carina distinct, inconspicuously foveolate (Fig. 2a); outer-orbital sulcus broad, hind marginal carina inconspicuous, inconspicuously foveolate.

Mesosoma. Pronotal collar with sparse, sturdy rugae laterally (Fig. 2d), strongly elevated medially, anterior pronotal ridge strong marked, lateral angles sharp and projected (Fig. 2e). Scutum with coarse [fine] puncture, sparsely distributed, several slender transverse striations anteriorly (Fig. 2h), fovea present on posterior margin (Fig. 2e); admedian line conspicuous, extending to one third of scutum length; notaulus shallowly grooved and foveolate, extending to one third of scutum length (Fig. 2h); parapsidal line conspicuous (Fig. 2e). Scutellum with fine punctures sparsely distributed; metanotum on laterals with sturdy, oblique ridged (Fig. 2e). Mesopleuron with fine punctures, sparsely distributed; omaulus and hypersternaulus broadened as midtibial width, distinctly foveolate; scrobal sulcus short as mid trochanter length, foveate (Fig. 2d). Propodeum strongly irregular reticulated ridged on propodeal enclosure and side, reticulates broad as Fig. 2i and with shiny interspace, smooth area posterodorsally; propodeum posteriorly with rectangular median groove, reticulate, a small smooth area medially, and irregular reticulation posteriorly (Fig. 2i); propodeal side presenting sparse, sturdy, longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 2d).

Legs. Outer surface of hindtibia without spines.

Metasoma. Petiole nearly cylindrical, slightly bowed, with dense weak rugose, basal and apical petiole width equal (Fig. 2c), lateral with few weak longitudinal carinae [carinae inconspicuous]. Gaster segments with fine sparsed puncture (Fig. 2f). Pygidial area punctate, oval and concave (Fig. 2g).

Male. Unknown

Distribution.

China (Guizhou, Yunnan).

Etymology.

The name frontirugatus, is junction of Latin words: front (= face) and rugatus (= rugae); referring to rugose on median and lower frons.