Zeugomutilla pangi Lelej

Lelej, Arkady S., Williams, Kevin A., Loktionov, Valery M., Pang, Hong & Xu, Zai-Fu, 2017, Review of the genus Zeugomutilla Chen, 1957 (Hymenoptera, Mutillidae, Mutillini), with description of two new species, Zootaxa 4247 (1), pp. 1-15 : 6-11

Zeugomutilla pangi Lelej , sp. nov.

(Figs 12–19)

Diagnosis. Male. Body length 11.2–11.8 mm. Flagellomere 1 0.77–0.80 × flagellomere 2. Distance between outer ocellar margins 0.76 × distance between posterior ocelli and dorsoposterior occipital border. Metanotum densely punctate, without median glabrous narrow area. Female. Body length 8.0 mm. Head and scape black. Metasomal tergum 2 in basal half with two large spots of golden setae disposed transversely, distance between spots 0.25 × diameter of spot. Metasomal tergum 5 wholly and tergum 6 basally with golden setae.

Material examined. Holotype, ♂, pinned, with genitalia in a separate micro vial, attached on the same pin, China: " Hainan Is., S[outh] China / Naam-fung., 10 mi. S-SW. / of Nodoa [Danzhou]. Tan-hsien / (Distr.). July 1, 1932 / O.K. Lau & F.K. To // Holotypus ♂ / Zeugomutilla / pangi / Lelej " [ SYSM] . Paratypes: China: " Hainan Is., S[outh] China / Taai-po [Tai-po]. 27+mi ex. / Naam-fung., Lin-kao / District. September 19 –24.1932. F.K. To // Paratypus ♀ / Zeugomutilla / pangi / Lelej ", 1♀ [ SYSM] ; Hainan, Jianfengling National Nature Reserve , 25.v.2006, Li Yi-cheng, 1♂ [ SCAU] .

Description. Male. Body length 11.2–11.8 mm. Black with metasomal terga 1–3 and sterna 1–3 ferruginous. Frons, lateral area of clypeus, and base of mandible with pale yellow, dense, subappressed setae; gena with pale yellow, dense, erect setae; vertex with whitish, scanty setae; pronotum, propleuron and mesoscutum with whitishyellow, dense, recumbent setae (posterior pronotal margin densely fringed); mesopleuron, lateral area of metanotum and dorsum of propodeum with whitish-yellow, dense, appressed setae; posterior propodeal slope with whitish-yellow, sparse, erect setae; mesoscutellum and lateral propodeal slope with sparse setae; legs with pale yellow, dense, suberect setae. Metasomal terga with appressed golden setae, sparsely fringed with pale yellow setae apically, sterna with sparse subappressed yellowish setae. Metasomal tergum 2 with lateral felt line, sternum 2 without lateral felt line.

Relation of head width and mesosoma width including tegulae about 116:137; relation of maxillary palpus length and cardo length 6.5:2. Mandible bidentate at apex, with strong subbasal tooth on inner border and dorsal carina extending from base to subapical tooth; outer margin simple beneath, but emarginate and broadened basally. Clypeus with median subtriangular area raised, and with anterior margin slightly notched. Scape bicarinate beneath, flagellomere 1 0.77–0.80 × flagellomere 2; antennal scrobes obscurely carinate. Ocelli small, POL:OOL=0.52. Distance between outer ocellar margins 0.76 × distance between posterior ocelli and dorsoposterior occipital border. Frons and vertex with fine, well separated punctures; gena with fine, dense punctures. Notauli well developed and touching anterior border of mesoscutum. Parapsids poorly defined. Tegula large, blackish, with smooth and shining outer margin. Mesoscutellum evenly convex. Metanotum densely punctate, without median glabrous narrow area. Pronotum and mesopleuron with moderately fine, confluent punctures; mesoscutum with moderately coarse, more or less separated punctures; mesoscutellum with moderately coarse, somewhat confluent punctures; propleuron obscurely striato-punctate; inferior portions of metapleuron glabrous and shining. Propodeum reticulate, more finely so laterally, and with larger cells dorsomedially.

Forewings fuscous, submarginal cell 1 large, subtriangular, acute apically, approximately equal in length to marginal cell; submarginal cell 2 receiving recurrent vein at midpoint; submarginal cell 3 less distinct than submarginal cell 2 and receiving recurrent vein at midpoint.

Longitudinal carina on metasomal sternum 1 well developed, ¾ × as long as sternum 1 in profile, straight; sternum 2 with posterior fifth replaced by strong, roundish elevation. Terga 1–6 and posterior halves of sterna 3–6 with moderately fine, well separated punctures; sterna 1–2 with moderately coarse, separated punctures; sternum 8 (hypopygium) and basal half of tergum 7 with moderately coarse, dense punctures. Apical half of pygidial plate on tergum 7 narrowly glabrous medially. Genitalia see Fig. 14.

Female. Body length 8.0 mm. Black with brownish mandible (except apex), clypeus, scape, pedicel, tibia, tarsus, palps; with mesosoma and coxa, trochanter and femur ferruginous. Lower surface of intermediate flagellomeres slightly tinted reddish. Clypeus, gena, frons and occiput with yellow, sparse, erect setae; dorsum of mesosoma, posterior propodeal slope and metasomal tergum 1 with setae as those on head; metasomal tergum 2 with black dense, recumbent setae; apical fringe of tergum 2, terga 3–5 and tergum 6 (except pygidial plate) with yellow, dense, appressed setae mixed with longer erect ones; sterna 2–6 and legs with yellow, sparse, erect setae. Metasomal tergum 2 anteriorly with two large subcircular spots of golden setae, separated by 0.25 of their diameter; lateral felt line of tergum 2 dirty yellow.

Relation of head width and mesosoma width 95:90 (pronotum): 90 (mesonotum): 95 (propodeum); relation of maxillary palps length and cardo length 8.0:2.5. Head weakly but distinctly narrowed behind eyes. Mandible with weak preapical and stronger subbasal teeth on inner border. Clypeus posteriorly elevated into rather low, transversely arcuate ridge. Flagellomere 1 1.6 × flagellomere 2; antennal scrobe distinctly carinate above. Eye ovate, moderately convex. Gena distinctly carinate and with tooth on midpoint of hypostomal carina. Frons, vertex and gena with moderately coarse, elongate punctures with tendency to rugosity.

FIGURES 1–11. 1, 3, 6, 7. Zeugomutilla saepes , ♀. 2, 4, 5, 8–11. Z. pycnopyga , ♂. 1, 4. Habitus, lateral view; 2, 3. Labels; 5, 6. Metasoma, dorsal view; 7. Pygidial plate, dorsal view; 8–11. Genitalia (8, ventral, 9, 11, dorsal, 10, lateral view). Scale bars for 8–10 = 0.2 mm. 11 from: Chen 1957.

FIGURES 12–25. 12–19. Zeugomutilla pangi sp. nov. (12–14, ♂, paratype; 15, ♂, holotype; 16–19, ♀, paratype). 20, 22, 24. Z. saepes , ♀. 21, 23, 25. Z. pycnopyga , ♂. 12. Habitus, lateral view; 13. Head and pronotum, dorsolateral view; 14. Genitalia, ventral view; 15, 19. Labels; 16. Habitus, dorsolateral view; 17. Metasoma, dorsal view; 18. Pygidial plate, dorsal view; 20, 2 1. Head, anterodorsal view; 22, 23. Scape, pedicel and flagellomeres 1–3; 24, 25. Mandible, dorsal view. Scale bar for 14 = 0.2 mm. 20–25 from: Lelej 1992.

FIGURES 26–36. 26, 30, 34. Zeugomutilla bainbriggei , ♀. 27, 31. Z. horni , ♀. 28, 32, 35. Z. recondita , ♀. 29, 33. Z. spinulosa , ♀. 36. Z. saepes , ♀ from Cambodia, mesosoma and metasomal tergum 2, dorsal view. 26–29. Habitus, dorsal view; 30–33. Habitus, lateral view; 34, 35. Pygidium. Scale bars for 26 – 33, 36 = 1.0 mm.

Relation of mesosoma length to its width 120:95. Mesosoma with lateral margins subparallel, crenate, concavely curved, mesoscutum with lateral carina; humeral angles and pronotal lateral tubercle acute, prominent. Pleura depressed in center, sharply marked-off from anterior pronotal slope and dorsum of pro- to metanotum by marginal recurvature and from posterior propodeal slope by marginal denticles; mesopleural suture carinate. Propodeum with posterior slope abruptly separated from dorsal surface by transverse row of nine denticles (median longest). Dorsum of mesosoma with moderately coarse, longitudinally rugose punctures; pleura glabrous; posterior propodeal slope with little coarser and shallower, elongate, strongly confluent punctures.

Legs moderately long; meso- and metatibia each with one row of four spines; tibio-tarsal relation of hind leg 90:40:23:17:13:13.

Metasomal sternum 1 with anterior arm of ^-shaped ridge moderately strong and posterior ones very weak; sternum 2 (except posterior fifth) with median carina. Anterior slope of tergum 1 with well separated, somewhat elongated punctures; dorsal surface of tergum 1 with mostly moderately coarse punctures; tergum 2 with moderately coarse, elongate, confluent punctures; terga 3–5 with dense, tergum 6 (except pygidial plate) with coarse, almost confluent punctures; sterna 1–2 with coarse, more or less confluent punctures; posterior area of sterna 3–6 with fine, separated punctures. Sternum 1 with area embraced by posterior arms of ^-shaped ridge weakly punctate. Pygidial plate almost anteriorly opened, regular hexagon, surface glabrous and shining; bounded by lateral carina weakly in basal half and strongly in apical half and distinctly angulate at their junctions with posterior margin.

Distribution. China (Hainan).

Remarks. The female of this new species is similar to Z. saepes , but differs in having the pale spots of metasomal tergum 2 larger (separated by nearly spot diameter in Z. saepes ) and the scape black (scape reddish to brown in Z. saepes ). This species also appears to be restricted to the island of Hainan, while Z. saepes is widespread in China and Peninsular Southeast Asia. The condition of holotype (male) is not good and we used for the photos of paratype (Figs 12–14) but retain the labels of holotype (Fig. 15).

The male and female were collected during Lingnan University Hainan Island Expedition in 1932. The collecting localities are close to each other (about 50 km).

Etymology. The specific name is dedicated to Prof. Pang Xiongfei (1929–2004), famous Chinese entomologist, member of Chinese Academy of Sciences and Professor of South China Agricultural University (Liang 2005).