Cleruchus, Enock, 1909

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2020, Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico, Zootaxa 4773 (3), pp. 1-411 : 118

CLERUCHUS Enock, 1909

( Figs 279–310 )

Cleruchus Enock, 1909: 453 . Type species: Cleruchus pluteus Enock, 1909 , by monotypy.

Eucleruchus Ogloblin, 1940: 600 . Type species: Eucleruchus neivai Ogloblin, 1940 , by original designation. Synonymy by Luft Albarracin et al., 2009: 3.

Stenopteromymar Ferrière, 1952: 41 . Type species: Stenopteromymar biciliatus Ferrière, 1952 , by monotypy. Synonymy by Viggiani, 1974b: 88.

Paracleruchus Yoshimoto, 1971: 1079 . Type species: Paracleruchus pieloui Yoshimoto, 1971 , by original designation. Synonymy by Viggiani, 1974b: 88.

Douttiella Annecke, 1961b: 71 . Type species: Douttiella depressa Annecke, 1961 , by original designation. Synonymy by Noyes & Valentine, 1989: 31.

Haplochaeta Noyes & Valentine, 1989: 35 . Type species: Haplochaeta mandibularis Noyes & Valentine, 1989 , by original designation. Synonymy by Lin et al., 2007: 29.

Bakkendorfia Mathot, 1966: 229 . Type species: Bakkendorfia musangae Mathot, 1966 , by original designation. Synonymy by Huber & Triapitsyn, 2017: 40.

Diagnosis. Body length 330–1040 μm. Head in lateral view with face strongly projecting anteriorly, with a sharp angle (about 90°) between dorsal and ventral surfaces and toruli just dorsal to angle ( Figs 280 , 284a , 295 ); vertex with ocelli in a low, wide triangle, the lateral ocelli at posterolateral angles next to posterior apex of supraorbital trabecula ( Figs 281 , 296 ); funicle segments quadrate ( Fig. 285 ) to wider than long; clava 1-segmented ( Figs 280 , 285 ); frenum entire ( Fig. 287 ); fore wing narrow and parallel-sided, with widest point at posterior lobe opposite or just distal to venation ( Figs 279 , 292 ); ovipositor short, less than half length of gaster ( Figs 290 , 305 ).

Discussion. Cleruchus and Platystethynium (Platypatasson) belong in the Cleruchus group of genera, which consists of species with rather dorsoventrally flattened bodies, claval segments quadrate or shorter than wide ( Figs 285 , 805 ) and head in lateral view triangular, with face strongly projecting anteriorly ( Figs 280 , 284 , 295 , 800 , 804 ) so toruli are well anterior to the mouthparts. This group could be treated a subgroup within a larger Anagrus group of genera depending on which features are used to define the group. Cleruchus differs from Platystethynium (Platypatasson) by the clava 1-segmented (entire) clava.

Nearctic hosts. Coleoptera : Curculionidae , possibly Ciidae .

Important reference. Triapitsyn (2014a).

Figures

FIGURE 800. Platystethynium (Platypatasson) sp., habitus. Canada, Ontario, Buckham’s Bay, 45.498548°N 76.110814°W, 24–30.vii.2010, J. Read. Scale bar=500 μm.

FIGURES 279, 280. Cleruchus sp., habitus. 279, winged specimen – Canada, Ontario, Constance Bay, 12–24.viii.1983, M. Sanborne; 280, wingless specimen – Canada, Nova Scotia, Kings Co., Sheffield Mills, 21.vii.1997, S. Rigby, pitfall under Mc- Intosh apple tree. Scale bars=500 μm.

FIGURES 281–286. Cleruchus sp. 281, head, dorsal; 282, head ventral; 283 head ventral (internal) showing tentorium; 284a, head, lateral; 284b, head, lateral (internal) showing ocular apodeme; 285, female antenna; 286, male antenna. Scale bars: 281– 283, 285, 286=100 μm; 284=50 μm.

FIGURES 287, 288. Cleruchus sp., mesosoma. 287, dorsal; 288, lateral. Scale bars=100 μm.

FIGURES 289, 290. Cleruchus sp., metasoma. 289, dorsal; 290, dorsal showing genitalia through gaster. Scale bars=100 μm.

FIGURES 291, 292. Cleruchus sp., male. 291a, metasoma, lateral; 291b, genitalia seen through gaster; 292, wings. Scale bars=100 μm.

FIGURES 293–298. Cleruchus sp., head. 293, male, anterior; 294, male, posterior; 295, lateral; 296, dorsal; 297, ventral; 298, mouthparts. Scale bars=20 μm.

FIGURES 299–303. Cleruchus sp., mesosoma. 299, dorsal; 300, lateral; 301, ventral; 302, anterior; 303, propodeum, dorsal. Scale bars: 299–301=50 μm; 32, 303=20 μm.

FIGURES 304–310. Cleruchus sp., metasoma. 304, dorsal; 305, lateral; 306, ventral; 307, apex, dorsal; 308, apex, lateral; 309, male apex, lateral; 310, male apex, posterior. Scale bars: 304–306=50 μm; 32, 307–310=10 μm.

FIGURES 804–806. Platystethynium (Platypatasson) sp. 804a, lateral; 804b, lateral (internal) showing ocular apodeme; 805, antenna; 806, wings. Scale bars: 804, 805=100 μm; 806=200 μm.