Passaloecus bisulcatus Bashir & Ma, 2019

Bashir, Nawaz Haider, Du, Shi-Jie, Yue, Dan, Li, Qiang & Ma, Li, 2019, The genus Passaloecus Shuckard (Hymenoptera: Crabronidae) from China with four new species and two new records, Zootaxa 4629 (3), pp. 428-440 : 429-431

1. Passaloecus bisulcatus Bashir & Ma , sp. n.

( Figures 1 ; 5a, e ; 6a, e ; 7a, b )

Material examined. Holotype: ♀, China: Inner-Mongolia : Huhehaote National Forest Park, 40°50’N, 111°44’E, 16.VII.2006, coll. Li Tingjing ( YNAU) . Paratypes: 2♀♀, 6♂♂, same locality and date as holotype, coll. Luo Ming, Wang Peng, Li Tingjing ( YNAU) ; 1♂, China: Inner-Mongolia: Eerduosi: Wushenqi : Batuwan , 39°18'N, 109°46'E, 28.VII.2006, coll. Li Lingjing ( YNAU) ; 1♂, China: Xinjiang: Yili: Gongnaisi , 43°18'N, 84°31'E, 20.VII.2005, coll. Bai Xiaoshuan ( YNAU) ; 1♂, China: Inner-Mongolia: Eerduosi: Eqianqi : Dundatu , 39°36'N, 109°46'E, 25.VII.2006, coll. Li Tingjing ( YNAU) ; 1♂, China: Inner-Mongolia: Hailaer: Dongshan , 49°13'N, 119°48'E, 9.VIII.2006, coll. Li Tingjing ( YNAU) .

Diagnosis: This species resembles P. clypealis Faester, 1947 in sharing: mandible bidentate apically; free margin of clypeus broadly produced medially, nearly rounded or arcuate, and slightly reflected apically; lower frons coarsely coriaceous; interantennal tubercle narrow; ocellar triangle slightly convex, coriaceous, with dense, midsize punctures; vertex behind ocelli with midsize, dense punctures and dense, fine, transverse striation; occipital carina narrowed throughout, with strong crenulation; admedian line conspicuous, extending to ⅓ of scutum length; metanotum slightly coriaceous, with fine, dense punctures; hypersternaulus and episternal sulcus conspicuously crenate; omaulus absent; metapleuron shiny; metasomal segments half mat, slightly coriaceous, with fine, dense punctures; sternum II deeply impressed basally; metasoma distinctly constricted between segments I and II.

It differs from P. clypealis Faester by the following characters: scrobal sulcus distinctly and narrowly crenate; sternum I without keel; frontal median area distinctly impressed; gena with fine to midsize, dense punctures; pronotal collar without antero-lateral angle; scutal patches present; notaulus deeply grooved and crenulate; in female, mesopleuron posteriorly with long, dense longitudinal rugae. In P. clypealis Faester the scrobal sulcus is lacking; sternum I with a slender longitudinal keel medially, incomplete, reaching half of sternum I; frontal median area insignificantly impressed; gena with midsize to large dense punctures; pronotal collar with antero-lateral angle; scutal patches absent; notaulus slightly impressed, extending to only anterior of scutum; in female, mesopleuron posteriorly with short, sparse, longitudinal rugae.

Description. Female and male. Black; mandible reddish brown apically, basal ⅓ of outer margin black, re- mainder ivory to yellowish; palpi fulvous; labrum dark brown; pedicel, flagellum, petiole, and metasomal segments black. Pronotal lobe ivory to yellowish; tegula and forewing veins dark brown; apex and base of fore femur, mid femora apically, fore and mid tibiae, and tarsi reddish to dark brown; basal half of hind tibia ivory.

Mandible bidentate apically ( Fig. 1 ad). Labrum not constricted subapically. Median area of clypeus shiny, slightly convex, with sparse, mid to large size punctures, lateral area with inconspicuous reticulate microsculpture. Lower frons coarsely coriaceous; interantennal tubercle narrow; frontal median area distinctly impressed ( Fig. 1 ad). Middle and upper frons coarsely coriaceous, with large, dense punctures, some punctures contiguous. Ocellar triangle slightly convex, coriaceous, with dense, midsize punctures. Vertex behind ocelli with midsize, dense punctures and dense, fine, transverse striation, coarsely coriaceous ( Fig. 1b ). Gena coarsely coriaceous, with fine to midsize dense punctures. Occipital carina narrowed throughout, with strong crenulation.

Anterior margin of pronotal collar with conspicuous carina, without anterolateral angle. Mesoscutum coarsely coriaceous ( Fig. 5a ), with fine to midsize, dense punctures that are 0–1 × diameters apart, and with sparse, strong, short longitudinal rugae posteriorly; admedian line conspicuous, extending to ⅓ of scutum length; notaulus deeply grooved and crenulate; parapsidal line conspicuous, ⅓ of scutum length ( Fig. 5a ). Scutellum shiny, with fine, dense punctures that are 0–2 × diameters apart. Metanotum slightly coriaceous, with fine, dense punctures. Mesopleuron coarsely coriaceous, with midsize dense punctures; scrobal sulcus distinctly and narrowly crenate; hypersternaulus and episternal sulcus conspicuously crenate; omaulus absent ( Fig. 6a ). Metapleuron shiny. Propodeal enclosure not delimited by carina, with conspicuous irregular reticulation; posterior surface with irregular reticulation ( Fig. 5e ); lateral surface with dense, fine, oblique longitudinal rugae anteriorly and strong reticulation posteriorly.

Petiole short, nearly 2 × as long as midocellar diameter ( Fig. 1c ). Metasomal segments half mat, slightly coriaceous, with fine, dense punctures; sternum I without keel; sternum II deeply impressed basally; metasoma distinctly constricted between segments I and II ( Fig. 6e ).

Female. Body length 4.8 mm; scape beneath reddish brown; setae on clypeus silvery, short and sparse ( Fig. 1a ); free margin of clypeus broadly produced medially, nearly rounded or arcuate, and slightly reflected apically ( Fig. 1a ); HW: HLD: HLF = 68: 38: 61; HW: EWd: EW: TW: EL = 68: 15: 21: 20: 45; POD: OOD: OCD = 10: 12: 14: length of scape: length of pedicel: length of flagellomere I: width of flagellomere I: length of flagellomere II: width of flagellomere II = 20: 9: 9: 4: 9: 4; scutal patches present; mesopleuron posteriorly with long, dense longitudinal rugae; PL: PW: LTI: WTI = 11: 12: 53: 51.

Male. Body length 3.5–4.1 mm; scape beneath ivory to yellowish; setae on clypeus dense, long, silvery; free margin of clypeus slightly produced medially, nearly arcuate apically ( Fig. 1d ); HW: HLD: HLF = 58: 30: 50; HW: EWd: EW: TW: EL = 58: 13: 20: 15: 35; POD: OOD: OCD = 9: 11: 11; length of scape: length of pedicel: length of flagellomere I: width of flagellomere I: length of flagellomere II: width of flagellomere II = 14: 6: 8: 4: 8: 4; flagellomeres III–VII beneath with brownish tyloids, long, broad ( Fig. 1e ); scutal patches absent; PL: PW: LTI: WTI = 4: 10: 40: 34; spinose tubercles absent on the hind margin of metasomal tergum VI mesally. Genitalia ( Fig. 1 f–h).

Distribution. China (Inner-Mongolia, Xinjiang).

Etymology. The name, bisulcatus , is derived from the Latin prefix bi- (= two) and the Latin word sulcatus (= sulcate), referring to the scrobal sulcus and hypersternaulus conspicuously crenate, which is one of the main recognition characters of this species.

Figures

FIGURE 1. Passaloecus bisulcatus Bashir & Ma, sp. n. (a–c female; d–h male). a, d Frontal view of head; b Dorsal view of head; c Dorsal view of metasomal tergum I; e Antennal segments I-XIII; f Dorsal view of genitalia; g Lateral view of genitalia; h Ventral view of genitalia. Scale bars: a, c–d=1 mm; b=0.95 mm; e=1.31; f–h=1.24 mm.

FIGURE 5. a & e. Passaloecus bisulcatus Bashir & Ma, sp. n. (female). b & f. Passaloecus profundesulcatus Bashir & Ma, sp. n. (female). c & g. Passaloecus tuberangustus Bashir & Ma, sp. n. (female). d & h. Passaloecus tuberculiformis Bashir & Ma, sp. n. (male). a-d mesoscutum; e–h Dorsal view of propodeum. Scale bars: a–h=1 mm.

FIGURE 6. a & e. Passaloecus bisulcatus Bashir & Ma, sp. n. (female). b & f. Passaloecus profundesulcatus Bashir & Ma, sp. n. (female). c & g. Passaloecus tuberangustus Bashir & Ma, sp. n. (Female). d & h. Passaloecus tuberculiformis Bashir & Ma, sp. n. (male). a–d Lateral view of thorax; e–h Dorsal view of metasoma; Scale bars: a–h=1 mm.

FIGURE 7. a & b. Passaloecus bisulcatus Bashir & Ma, sp. n. (a female, b male). c & d. Passaloecus profundesulcatus Bashir & Ma, sp. n. (c female, d male). e & f. Passaloecus tuberangustus Bashir & Ma, sp. n. (e female, f male). g. Passaloecus tuberculiformis Bashir & Ma, sp. n. (male). h. Passaloecus turanicus Gussakovskij (female). i. Passaloecus turionum Dahlbom (female). a–i dorsal view. Scale bars: a–i=1 mm.