Passaloecus tuberculiformis Bashir & Ma

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: 435-437

publication ID

https://doi.org/10.11646/zootaxa.4629.3.10

publication LSID

lsid:zoobank.org:pub:DF21032F-0A10-42D5-A892-75A83C4217D8

persistent identifier

http://treatment.plazi.org/id/32D2FB3A-A067-4536-B200-58FCED92FA16

taxon LSID

lsid:zoobank.org:act:32D2FB3A-A067-4536-B200-58FCED92FA16

treatment provided by

Plazi

scientific name

Passaloecus tuberculiformis Bashir & Ma
status

sp. n.

4. Passaloecus tuberculiformis Bashir & Ma  , sp. n.

( Figures 4View FIGURE 4; 5d, hView FIGURE 5; 6d, hView FIGURE 6; 7gView FIGURE 7)

Material examined. Holotype: ♂, China: Heilongjiang: Yichun , 47°43’N, 128°53’E, 1985, No. 850205, coll. Jin Liyuan ( ZU)GoogleMaps  . Paratypes: 2♂♂, same data as holotypeGoogleMaps  .

Diagnosis. The male of new species is similar to P. mongolicus Tsuneki, 1972  in having the following: mandible bidentate apically; free margin of clypeus slightly produced medially, nearly truncate apically; frontal median carina lacking; interantennal tubercle short; ocellar triangle slightly convex; occipital carina narrowed throughout, crenulate ventrally; pronotal collar without anterior carina; scutal patches absent; admedian line conspicuous, extending to ⅓ of mesoscutum length; notaulus inconspicuously impressed; metanotum slightly coriaceous, with fine, dense, punctures; hypersternaulus and episternal sulcus conspicuously, broadly crenate; omaulus absent; metapleuron shiny; petiole short, nearly 1 × as long as midocellar diameter.

It can be distinguished from P. mongolicus Tsuneki  by the following characters: flagellomeres II–VIII beneath with long tyloids; labrum triangular, not constricted subapically; vertex behind ocelli with midsize, dense punctures; spinose tubercles present on the hind margin of metasomal tergum VI mesally; eye with inner margin slightly emarginate. In P. mongolicus Tsuneki  flagellomeres III–X beneath with smooth, short tyloids; labrum triangular, constricted subapically; vertex behind ocelli with large, dense punctures; spinose tubercles absent on the hind margin of metasomal tergum VI mesally; eye with inner margin convex, or very shallowly sinuate.

Description. Male. Body length 4.5 mm. Black; apex of mandible reddish brown, basal ⅓ of outer margin black, rest ivory to yellowish; labrum, palpi, and pronotal lobe ivory to yellowish; scape beneath ivory to yellowish, remainder dark brown to black; pedicel, tegula, and flagellum dark brown; forewing veins fulvous. Fore leg: outer margin of femur, tibia, and tarsi fulvous, trochanter and remainder femur dark brown; mid leg: apex of femur, tibia, and tarsi fulvous, rest of femur and trochanter dark brown; hind leg: basal one fourth of tibia yellowish, rest dark brown except coxa black; petiole, and metasoma black, apical segment dark brown; setae on clypeus dense, slightly elongate, silvery.

Mandible bidentate apically ( Fig. 4aView FIGURE 4). Labrum triangular, not constricted subapically. Clypeus flat, with midsize, dense punctures; free margin of clypeus slightly produced medially, nearly truncate apically ( Fig. 4aView FIGURE 4). Lower frons coarsely coriaceous, frontal median carina lacking; interantennal tubercle short ( Fig. 4aView FIGURE 4); middle and upper frons markedly coriaceous, and with large, dense, punctures; ocellar triangle slightly convex, coarsely coriaceous, with large dense punctures. Vertex behind ocelli with midsize, dense, punctures and dense, fine, transverse striation, coarsely coriaceous, slightly convex ( Fig. 4bView FIGURE 4). Gena coarsely coriaceous, with fine, dense punctures dorsally, and fine, sparse, punctures ventrally. Occipital carina narrowed throughout, crenulate ventrally. HW: HLD: HLF = 69: 35: 57; HW: EWd: EW: TW: EL = 69: 15: 22: 16: 45; POD: OOD: OCD = 11: 11: 16; length of scape: length of pedicel: length of flagellomere I: width of flagellomere I: length of flagellomere II: width of flagellomere II = 17: 8: 9: 6: 10: 6. Flagellomeres II–VIII beneath with broad, long tyloids ( Fig. 4cView FIGURE 4).

Pronotal collar without anterior carina or anterolateral angle. Mesoscutum coarsely coriaceous, with large, dense punctures that are 0–1 × diameters apart, and sparse, conspicuous, short, longitudinal rugae posteriorly; scutal patches absent; admedian line conspicuous, extending to ⅓ of mesoscutum length; notaulus inconspicuously impressed, extending to ⅓ of mesoscutum length; parapsidal line impressed, long ( Fig. 5dView FIGURE 5); scutellum slightly coriaceous, with midsize, dense, punctures that are 0–1 × diameters apart. Metanotum slightly coriaceous, with fine, dense, punctures. Mesopleuron coarsely coriaceous, with midsize, sparse, punctures, posteriorly with very short, sparse, longitudinal rugae; scrobal sulcus inconspicuously impressed; hypersternaulus and episternal sulcus conspicuously, broadly crenate; omaulus absent ( Fig. 6dView FIGURE 6). Metapleuron shiny. Propodeal enclosure not delimited by carina, with well-defined, irregular, reticulation; posterior surface with well-defined reticulation ( Fig. 5hView FIGURE 5); lateral surface anteriorly shiny, nearly smooth, with inconspicuous, dense, oblique, longitudinal striation, remaining area with well-defined reticulation.

Petiole short, nearly 1 × as long as midocellar diameter ( Fig. 4dView FIGURE 4); PL: PW: LTI: WTI = 5: 8: 39: 36. Metasoma half mat, slightly coriaceous, with fine to midsize, dense punctures; sternum I with a well-defined longitudinal keel medially, reaching half of sternum I; sternum II deeply impressed basally; metasoma slightly constricted between segments I and II; spinose tubercles present on the hind margin of metasomal tergum VI mesally ( Fig. 6hView FIGURE 6). Genitalia ( Fig. 4View FIGURE 4 e–g).

Female. unknown.

Distribution. China (Heilongjiang).

Etymology. The name, tuberculiformis  , is derived from the Latin word, tuberculum (= a tubercle) and the Latin suffix formis (= in the form of), referring to the metasomal tergum VI of male with spinose tubercles on the hind margin, which is one of the main recognition characters of this species.