Dryinus mexicanus (Perkins, 1907)

Guglielmino, Adalgisa & Olmi, Massimo, 2013, Revision of the extant Nearctic species of Dryinus Latreille 1804 group 1 (Hymenoptera: Dryinidae), with description of a new species from the USA, Zootaxa 3691 (5), pp. 577-590 : 586

5. Dryinus mexicanus (Perkins, 1907)

( Fig. 10 )

Paradryinus mexicanus Perkins, 1907: 39 ; Olmi 1982: 316.

Dryinus mexicanus (Perkins) : Olmi 1984: 823; Moya Raygoza & Olmi 2010: 97.

Material examined. Type. Holotype Ƥ (No 61264), MEXICO: Michoacan, Patzcuaro? (USNM). Other material. MEXICO: Distrito Federal, Amecameca, parasitized host collected 20.XI.1907, dryinid adult emerged 8.III.1908, A. Koebele leg., No. 2596, Perkins collection, 1Ƥ (USNM); Michoacan, Mil Cumbres, 5 km SW Huajumbaro, 8320’, 27.VII.1988, Ferreira & Schaffner leg., 1Ƥ (DETAM); Coahuila, Hwy. 57, 15 mi. SE Saltillo, 7000’ (AMNH).

Redescription. Female: fully winged; length 4.3–4.8 mm. Head, antenna and prothorax testaceous-reddish (in specimen from Mexico, Amecameca, vertex of head with one black spot); rest of mesosoma black; metasoma brown-reddish; legs testaceous-reddish or brown-testaceous. In specimen from Mexico, 5 km SW Huajumbaro, head black, except mandible, clypeus and anterior margin of face testaceous-reddish; antenna brown-testaceous; mesosoma black, except prothorax testaceous-reddish; metasoma brown, except anterior third testaceous; legs brown-testaceous. Antenna clavate; antennal segments in following proportions: 11:8:35:19:16:13:11:9:9:12. Head swollen, dull, reticulate rugose; frontal line complete, hardly visible and very thin in holotype, more distinct in other specimens; occipital carina complete; temple very prominent; holotype with POL shorter than OL. Head of specimen from Mexico, Amecameca, with POL = 4; OL = 2; OOL = 10; OPL = 1; TL = 5; greatest breadth of posterior ocelli about as long as OL. Pronotum dull, granulated, crossed by two transverse impressions, anterior one weak and posterior one strong; disc humped; posterior collar distinct; pronotal tubercle not reaching tegula. Scutum dull, granulated, reticulate rugose on lateral regions and near posterior margin. In specimen from Mexico, 5 km SW Huajumbaro, scutum completely reticulate rugose. Notauli almost complete, almost reaching posterior margin of scutum. Scutellum and metanotum dull, granulated. In specimen from Mexico, 5 km SW Huajumbaro, metanotum with anterior half rugose and posterior half unsculptured. Propodeum reticulate rugose, without longitudinal keels on posterior surface. Forewing with two dark transverse bands; distal part of stigmal vein much longer than proximal part (22:8). Protarsal segment 1 of holotype about twice as long as segment 4. Segment 3 of protarsus produced into hook. In specimen from Mexico, Amecameca, protarsal segments in following proportions: 22:2.5:4:12:18. Enlarged claw spatulate ( Fig. 10 ), with one strong subapical tooth and one row of four-six very long lamellae (five in holotype). Segment 5 of protarsus ( Fig. 10 ) with three rows of approximately 36 lamellae (among which two-seven lamellae longer than others) extending continuously to distal apex. Tibial spurs 1/1/2.

Male. Unknown.

Hosts. Unknown.

Distribution. Mexico.

Figures

FIGURES 9 – 13. Chelae. 9. Dryinus halsteadi, holotype Ƥ. 10. D. mexicanus, holotype Ƥ. 11. D. nearcticus, holotype Ƥ. 12. D. splendidus sp. nov., holotype Ƥ. 13. D. wetmorei, holotype Ƥ. Scale bar 0.19 mm for 9, 0.17 mm for 10, 0.15 mm for 11 and 13, 0.13 mm for 12.