Paracyphononyx noncarinulatus Liu & Ma, 2024

Liu, Yongxiu, Song, Zhiyan, Li, Qiang & Ma, Li, 2024, Two new species of the spider wasp genus Paracyphononyx Gribodo, 1884 (Hymenoptera, Pompilidae) in China, with a key to Chinese species, Zootaxa 5512 (1), pp. 80-92 : 86-90

Paracyphononyx noncarinulatus Liu & Ma , sp. nov.

LSIDurn:lsid:zoobank.org:act: 722C7D2E-05CF-4610-8FF7-D6104FB45039

( Figs 3A–G , 4A–H , 5A–C )

Material examined. Holotype, ♀, CHINA, Yunnan, Jinghong City, Menghai County, Guanggang Village , 21°49′N, 100°29′E, 1526 m, Malaise trap, 22.IV–28.V.2006, Yong-sheng Pu . Paratypes. CHINA, Yunnan: 1♂, same locality as holotype, 27.II–22.III.2019, coll. Yong-sheng Pu ; 2♀, Zhaotong City, Yongshan County, Huanghua Town , Chaoyangba , 27°59’N, 103°33’E, 705m, 22.VII.2004, coll. Yanli Huang.

Diagnosis. The new species clearly differs from other congeners by the following characteristics: ocelli forming a right-angled triangle; pedicel and first three flagellomeres segments ventrally reddish brown in male; pronotum without yellowish white stripe at posterior margin; SMC3 strongly narrowed above and forming triangle, petiolate; hind femur and hind tibia reddish-brown; hindwing crossvein cu-a arcuate or curved, vein M and vein cu-a of hindwing coincides at intersection of vein M + CuA.

Description. Female (Measurements of the holotype are given in parentheses). Body length 14–15 (13) mm; forewing length 9.5–10 (9.8) mm. Body black ( Fig. 3A ); mandible medially, hind femur (except for basal 1/3) and hind tibia reddish-brown ( Fig. 3A ); labial and maxillary palpus brownish; wings fusco-hyaline or pale fuscous, forewing with dark brown band exterior to SMC3 ( Fig. 3F ); head (except for vertex, middle and apex of mandible, and eye) and pronotum (except for lateral triangular area), propleuron, mesoscutum posteriorly, scutellum laterally, mesopleuron, metanotum laterally, metapleuron, propodeum and legs covered with dense, very fine, grayish-white pubescence; metasomal tergum 1 (except for apex), basal half of metasomal terga 2–3, terga 4–5, and sterna 1–3 with broad band of bluish-gray pubescence; mandible basally, frons, vertex, metasomal terga 5–6 and sterna 2–6 with several brown to black long setae; gena, propleuron, and fore femur basally with sparse, long, white setae ( Fig. 3C ); metapleuron, metanotum medially, posterior slope of propodeum covered with dense, erect, white, appressed setae ( Fig. 3E ); metasomal tergum 1 largely with squamiform pubescence.

Head. In frontal view ( Fig. 3B ), ratio of head width to head length = 50:46; mandible with a small internal tooth subapically; labrum fully exposed; clypeus 2 × as wide as long, apical margin nearly truncate but weakly concave medially; malar space fairly long, about as long as antennal pedicel, malar space 0.33–0.5 × mandible width basally; frontal line complete from anterior ocellus to antennal sockets but faint; inner orbits nearly parallel at top and slightly converge at bottom, slightly concave at middle, LID:MID:UID = 8.2:10:7.3; area between antennal socket slightly elevated; frons slightly elevated in lateral view, half of its width equal to eye width (in frontal view); gena narrow, its width 0.15–0.17 × eye width in lateral view ( Fig. 3C ); ocelli forming a right-angled triangle; OOD:OD: POD:OCD = 7:5:10:10 ( Fig. 3D ); vertex flat between eye tops; UID equal to length of A3 and 0.2 × A4 combined; occipital carina distinct; antennal slender; length of A1:A2:A3:A4:A5 = 10:3:13:14:14; ratio of length of A3 to AW of A3 = 13:3; ratio of length of A12 to BW of A12 = 4:1.

Mesosoma. In dorsal view, pronotum significantly shorter than mesonotum, its posterior margin triangularly emarginate medially, ratio of width of pronotum posteriorly to length of pronotum medially = 2:1; mesoscutum with two short and weak admedian line anteriorly, without notaulus, parapsidal line distinct, extending from posterior margin to three quarters of mesoscutum; scutellum and metanotum conspicuously convex medially, both tops at same height, metanotum slightly lower than scutellum ( Fig. 3E ); metapostnotum smooth, wide and arch-shaped in middle, narrowing towards sides into linear ( Fig. 3E ), posterior margin distinctly concave; ratio of length of metanotum to metapostnotum at middle = 20:7; propodeum lustrous, with declivity at its posterior, about 0.28 × length of propodeum, dorsum widest at middle. ( Fig. 3E ).

Wing. Forewings with three submarginal cells, SMC2 receiving crossvein 1m-cu at basal 0.67, SMC3 receiving crossvein 2m-cu at basal 0.57; SMC2 on vein Rs is much shorter than its length on vein M; SMC3 strongly narrowed above and forming triangle, petiolate, and petiole length 0.20–0.33 × height of SMC3; pterostigma small, ratio of length of pterostigma to 2r-rs = 1:3; ratio of SMC2 to SMC3 on vein M = 20:31; ratio of length of marginal cell to distance from marginal cell tip to wing tip = 15:28; hindwing crossvein cu-a arcuate or curved, vein M and vein cu-a of hindwing coincides at intersection of vein M + CuA ( Fig. 3F ).

Legs. Fore legs without tarsal comb; orbiculae ca. 0.25 × as long as tarsal claws; orbicular pecten dense and long, about 0.5 times the length of the tarsal claw; all tibiae, mid and hind basitarsis with long, blue-black metallic luster spines; under side of all tarsomere 5 beneath with median row of spines; long spur of hind tibia 0.67–0.83 × as long as basitarsus; ratio of hind tibia length to hind tibia longer spur at apex and tergum 1 = 20:10:11.

Metasoma. Not petiolate, subfusiform; apical sternum moderately compressed laterally and without longitudinal ridge ventrally, arc ( Fig. 3G ).

Male. Similar to female except as follows: body length 8.8 mm; forewing length 7.2 mm ( Fig. 4A ). Scape with a triangular yellowish white spot below ( Fig. 4B ); pedicel and first three flagellomeres segments ventrally reddish brown ( Fig. 4B ); metasomal tergum 7 white. OOD:OD:POD:OCD = 9:6:10:7 ( Fig. 4E ); antenna stout and long, A5–13 obviously serrated, beyond basal strongly crenulate, above with large shallow depression ( Fig. 4C ); LID: MID:UID = 35:45:40 ( Fig. 4B ); UID equal to length of A3 and 0.83 × A4 combined; length of A1:A2:A3:A4:A5: A8:A12:A13 = 10:3:10:13:12:10:9:7; ratio of length of A3 to AW of A3 = 5:2; ratio of length of A13 to BW of A13 = 4:1; ratio of hind tibia length to hind tibia longer spur at apex and tergum 1 = 2.5:1; ratio of length of metanotum to metapostnotum at middle = 12:7 ( Fig. 4G ). Metasomal sternum 6 prominent in angular shape laterally, forming V shape medially. Under side of all tarsomere 5 without median row of spines.

SGP and genitalia. In ventral view ( Fig. 5A ), SGP arched at apical margin, with dense, black setae, translucent from base to middle area; digitus slightly enlarged apically, with irregular, dense and long, black setae apically and medially; paramere short, feathery, as long as digitus, with long setae at inner side, apex of aedeagus with distinct, band-like and transparent membrane, length of transparent membrane 0.75 × aedeagus ( Fig. 5B, C ).

Comparison. The new species is similar to P. pedestris ( Smith, 1855) in having the following characteristics: at least A2–A5 ventrally reddish brown ( Fig. 4B ); mandible medially, hind femur and hind tibia reddish-brown ( Fig. 3A ); all tibiae, mid and hind basitarsis with long, blue-black metallic luster spines; metasomal tergum 1 largely with squamiform pubescence; apical sternum compressed laterally; but markedly differs by the characters given in the Table 2.

Distribution. China (Yunnan).

Etymology. The name noncarinulatus originates from the Latin word “non”(= without) and “carinatus” (= carinate), referring to apical sternum of female without a longitudinal ridge ventrally.

Figures

FIGURE 3. Paracyphononyx noncarinulatus Liu & Ma, sp. nov., female, holotype. A. Habitus, lateral view. B. Head, frontal view. C. Head and mesosoma, lateral view. D. Head, dorsal view. E. Scutellum, metanotum, metapostnotum, and propodeum, dorsal view. F. Fore- and hindwings. G. Apical sternum, ventral view. Scale bars = 1 mm.

FIGURE 4. Paracyphononyx noncarinulatus Liu & Ma, sp. nov., male, paratype. A. Habitus, lateral view. B. Head, frontal view. C. Antenna, lateral view. D. Head and mesosoma, lateral view. E. Head, dorsal view. F. Pronotum, dorsal view. G. Scutellum, metanotum, metapostnotum, and propodeum, dorsal view. H. Fore- and hindwings. Scale bars = 1 mm.

FIGURE 5. Paracyphononyx noncarinulatus Liu & Ma, sp. nov., male, paratype. A. SGP, ventral view. B. Genitalia, dorsal view. C. Genitalia, ventral view. Scale bars = 1 mm.