Carinostigmus latidentatus Bashir & Ma, 2020

Bashir, Nawaz Haider, Ma, Li & Li, Qiang, 2020, Chinese species of Carinostigmus Tsuneki (Hymenoptera, Crabronidae), including three new species and a new record to China, ZooKeys 987, pp. 115-134 : 115

Carinostigmus latidentatus Bashir & Ma sp. nov. Figs 3 , 5b, c

Type material.

Holotype: ♀, China: Yunnan: Jinghong: Menghai: Bulang Mountain, 21°56'N, 100°26'E, 16-IX.14.VII.2018, No. 2019000499, Malaise trap (YNAU). Paratypes: 2♀♀, same data as holotype except: 25-V.17.IV.2018, No. 2019000009, 20-VIII.16.VII.2018, No. 2019000406; 1♀, China: Yunnan: Jinghong: Menghai: Guanggang Village: Guchalin, 21°56'N, 100°27'E, 27-V.16.IV.2018, No. 2019000082, coll. Malaise trap (YNAU); 1♀, China: Yunnan: Jinghong: Xishuangbanna National Forest Park, 22°01'N, 100°52'E, 31.VII.2003, coll. Qiang Li (ZJU); 1♀, China: Yunnan: Ruili: Mengxiu, 24°04'N, 97°47'E, 2-6.V.1981, No. 813076, coll. Junhua He (ZJU); 1♀, China: Fujian: Yongan County: Tianbaoyan, 25°56'N, 117°23'E, 15-18.VII.2001, No. 20020143, coll. Zaifu Xu (ZJU); 1♀, China: Hainan: Bawangling Mountain, 19°07'N, 109°05'E, 10.VI.2007, No. 200707357, coll. Jingxian Liu (ZJU); 1♀, China: Hainan: Diaoluo Mountain, 18°47'N, 109°52'E, 28.V.2007, No. 200707952, coll. Jingxian Liu (ZJU); 1♂, China: Yunnan: Pingbian: Baihushan, 22°59'N, 103°40'E, 17.VII.2003, 1310-1380 m, coll. Peng Wang (YNAU); 1♂, China: Yunnan: Ruili, 24°01'N, 97°51'E, 2.V.1981, No. 812495, coll. Junhua He (ZJU).

Diagnosis.

This species is similar to C. saigusai (Tsuneki, 1966) in having the following: labrum broad, wider than long, sub quadrate (Fig. 3j ); vertex behind ocelli impunctate (Fig. 3b ); gena with several sturdy oblique transverse rugae near mandible area; occipital carina narrowed, distinctly foveolate (Fig. 3b ); inner and outer-orbital sulcus narrowed (Fig. 3a ); notaulus inconspicuous; scutellum dull, with fine sparsed punctures (Fig. 3f ); metanotum densely covered by sturdy longitudinal rugae; omaulus broad as midtibial width, scrobal sulcus absent (Fig. 3g ); lateral surface of propodeum with sparsed sturdy or slender oblique longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 3g ); petiole dorsal surface nearly cylindrical, slightly bowed (Fig. 3c ). Distinguished from C. saigusai by setae on mandible short, shorter than pedicel length; clypeus with coarse punctures (Fig. 3a ); free margin of clypeal lobe with four teeth, median lobe broadly produced, nearly truncate, with two small inconspicuous lateral teeth, slightly reflexed apically (Fig. 3j ); median and lower frons dull (Fig. 3a ); upper frons with fine punctures, frontal carina distinct anteriorly, not reaching anterior ocellus (Fig. 3b ); pronotal collar slightly elevated medially; admedian line inconspicuous; parapsidal line well-marked (Fig. 3f ); propodeal enclosure shallowly impressed, triangular; posterior surface of propodeum with triangular median groove, several fairly slender oblique longitudinal rugae anteriorly, and a large smooth area medially (Fig. 3k ). Carinostigmus saigusai (Tsuneki) has the following characters: setae on mandible long; clypeus impunctate; free margin of clypeal lobe with three distinct teeth medially ( Tsuneki 1966: fig. 25); median and lower frons not dull; upper frons impunctate, without frontal median carina; pronotal collar smooth; admedian line conspicuous; parapsidal line inconspicuous; propodeal enclosure deeply impressed, sub triangular; posterior surface of propodeum with rectangular median groove, and a small smooth area medially ( Tsuneki 1966: fig. 27).

Description.

Female (Figs 3a-c, f-k , 5b ): Based on holotype, if any variation in paratypes described in square brackets.

Measurements.

♀, BL: 5.4 [4.8-5.5] mm;

HW:HLD:HLF = 70:40:55;

HWmax:HWmin = 70:37;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 70:19:2:21:2:20:1:43;

AOD:WAS:IAD = 3:5:10;

POD:OOD:OCD:IODc:IODv:IODmin = 7:14:18:27:41:27;

LS:LP:LFI:WFI:LFII:WFII = 21:10:9:3:10:3;

LC:WC = 32:6;

PL:PW:LTI:WTI = 48:7:30:34.

♂, BL 4.2-4.7 mm;

HW:HLD:HLF = 62:33:47;

HWmax:HWmin = 62:30;

HW:EWd:IOW:EW:OOW:TW:OCW:EL = 62:17:2:19:2:20:1:41;

AOD:WAS:IAD = 3:5:8;

POD:OOD:OCD:IODc:IODv:IODmin = 5:11:13:23:38:23;

LS:LP:LFI:WFI:LFII:WFII = 19:7:7:2:8:2;

LC:WC = 27:5;

PL:PW:LTI:WTI = 45:6:25:25.

Color pattern. Body black with shiny aspect, except the following: mandible ivory white with yellowish translucent margins (at minus apically), labrum, palpi, scape ventrally, and pronotal lobe ivory white; scape dorsally, pedicel, flagellomeres I-III fulvous (remains progressively dark), and tegula fulvous; forewing veins brown to dark brown; fore coxa extensively, trochanter, tibia, tarsi yellowish to fulvous, rest dark brown; mid coxa extensively, trochanter, base and apex of femur, tibia, tarsi yellowish to fulvous, rest dark brown; hind coxa, trochanter, tarsus yellowish to fulvous, tibia basally ivory, remaining dark brown; pale setae on clypeal margin and on mandible.

Head. Mandible tridentate apically; short setae, shorter than pedicel length on mandible, sparsed. Labrum sub quadrate (Fig. 3j ). Clypeus slightly convex [nearly flat], with coarse punctures; setae on margin of clypeus sparse, long (Fig. 3a, j ); free margin of clypeal lobe with four teeth, median apical margin of clypeal disk produced, nearly truncate, with two small inconspicuous lateral teeth, slightly reflexed, a strong tooth on apical margin of each lateral lobe (Fig. 3j ). Median and lower frons irregularly microstriate, inter-antennal tubercle short, less than midocellus diameter (Fig. 3a ); upper frons smooth, with fine punctures, frontal carina distinct on frons, not reaching to midocellus (Fig. 3b ). Ocellar triangle nearly flat, impunctate, vertex behind ocelli impunctate. Gena with several sturdy transverse rugae near mandible area, lower gena with fine punctures medially, sparsely distributed. Occipital carina narrow, foveolate (Fig. 3b ). Inner-orbital sulcus narrowed as pedicel width, with inner marginal carina distinct, coarsely foveolate (Fig. 3a ); outer-orbital sulcus narrowed as pedicel width, hind marginal carina inconspicuous, inconspicuously foveolate.

Mesosoma. Pronotal collar slightly elevated medially, anterior pronotal ridge strong, lateral angles sharp and projected (Fig. 3f ). Scutum with coarse punctures, several slender transverse striations anteriorly, fovea present on scutum posterior margin (Fig. 3f ). Admedian line and notaulus inconspicuous [notaulus invisible], extending to only anterior of scutum length, parapsidal line distinctly marked. Scutellum dull, with fine sparsed punctures (Fig. 3f ). Metanotum densely covered by sturdy longitudinal rugae. Mesopleuron with sturdy, dense, short longitudinal rugae posteriorly, hypoepimeral area with several slender long longitudinal rugae, omaulus broad as midtibial width, hypersternaulus narrowed as pedicel width, distinctly foveolate, scrobal sulcus absent (Fig. 3g ). Propodeal enclosure shallowly impressed, triangular, with sturdy longitudinal rugae, median area reticulate (Fig. 3k ); posterior surface of propodeum with triangular median groove, several fairly slender oblique longitudinal rugae anteriorly, a large smooth area medially, and irregular reticulation posteriorly (Fig. 3k ); propodeal side presenting sparsed oblique longitudinal rugae anteriorly, and irregular reticulation posteriorly (Fig. 3g ).

Legs. Outer surface of hindtibia without spines.

Metasoma. Petiole dorsal surface nearly cylindrical, slightly bowed, basal and apical petiole width equal (Fig. 3c ), side smooth. Gaster segments sterna IV-VI with dense fine punctures, remaining nearly impunctate (Fig. 3i ). Pygidial area smooth, U-shaped, apex truncate (Fig. 3h ).

Male. (Figs 3d, e , 5c ). Same as female except labrum fulvous; mandible bidentate apically; labrum notched, with two triangular teeth apically; outer-orbital sulcus with hind marginal carina distinct, coarsely foveolate; flagellomeres without tyloids; admedian line and notaulus conspicuous, extending to half of scutum length; hypersternaulus broad as midtibial width; petiole widened toward apex slightly.

Distribution.

China (Yunnan, Fujian, Hainan).

Etymology.

The name latidentatus , is derived from the Latin words: lateralis (= lateral, side) contracted to lati and dentatus (= toothed, dentate), referring to the strong tooth on the apical margin of the lateral lobe of the clypeus.

Figures

Figure 3. Carinostigmus latidentatus Bashir & Ma, sp. nov. (a-c, f-k female d, e male) a, d head (frontal view) b, e head (dorsal view) c petiole (dorsal view) f scutum, scutellum and metanotum (dorsal view) g thorax (lateral view) h pygidial plate i metasoma (dorsal view) j free margin of clypeal lobe and labrum k propodeum (dorso-posterior view).

Figure 5. a Carinostigmus frontirugatus Bashir & Ma, sp. nov., (female) b, c C. latidentatus Bashir & Ma, sp. nov., (b female c male) d, e C. vesulcatus Bashir & Ma, sp. nov., (d female e male) f C. palawanensis (Tsuneki, 1976) (female) a-f lateral view.