Calobrachium luangum Gobbi & Azevedo

Gobbi, Fernanda T. & Azevedo, Celso O., 2016, Revision of Calobrachium Gobbi & Azevedo, gen. nov. (Hymenoptera, Bethylidae), with description of seven new Oriental species, Zootaxa 4083 (2), pp. 221-238: 231

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Calobrachium luangum Gobbi & Azevedo

sp. nov.

Calobrachium luangum Gobbi & Azevedo  , sp. nov.

( Figs 2View FIGURES 1 – 9, 11View FIGURES 10 – 18, 19View FIGURES 19 – 22, 24View FIGURES 23 – 30, 34, 35View FIGURES 31 – 38)

Description. MALE. Body length 2.8 mm. LFW 2.0 mm. Color. Head black; mandible, clypeus, antenna, mesosoma and metasoma castaneous; legs light castaneous; wings subhyaline.

Head ( Fig. 2View FIGURES 1 – 9). Mandible with three upper teeth small, lower one largest. Apical margin of median clypeal lobe straight. Flagellomeres long; four first antennomeres in ratio about 14:4:11:8; pedicel 1.0 × as long as wide; F1 very long, 2.8 × as long as wide; F9 1.8 × as long as wide; flagellar setae suberect and erect. Frontal carina slightly conspicuous. WH 0.9 × LH. WF 0.7 × WH. WF 1.4 × HE. Eye small, very salient. Ocellus small. DAOAbout DAO 0.2 × WF. Frontal angle of ocellar triangle acute. WOT 2.3 × DAOAbout DAO. OOL 1.4 × WOT. Distance of posterior ocellus to vertex crest 1.3 × DAOAbout DAO. VOL 1.1 × HE. Temple strongly divergent. Vertex straight.

Mesosoma ( Figs 11View FIGURES 10 – 18, 19View FIGURES 19 – 22). Pronotal disc densely punctate, mesonotum sparsely punctate. Pronotal collar short. Pronotal declivity low. Pronotal disc 0.5 × as long as wide; anterior region 0.4× as long as wide; quadrangular. Notauli conspicuous, occupying one third of mesoscutum. Scutellar furrow wide, deep, slightly scrobiculate; corner straight. Median region of scutellum coriaceous, punctate. Median region of metanotum short, wide; inner foveae of metanotal furrow not delimited. Propodeal disc 1.2 × as long as wide; 0.4 × as high as long; areolate; lateral carina conspicuous; propodeal declivity slightly areolate; side of propodeum slightly areolate. Mesopleuron anteriorly slightly rugulose, posteriorly slightly areolate; transversal furrow conspicuous, strongly scrobiculate. Discoidal vein strongly pigmented.

Metasoma. Petiole long, 0.4 × as long as propodeal disc. Hypopygium ( Fig. 24View FIGURES 23 – 30) 1.0 × as long as wide; posterior margin slightly trilobate; median lobe convex, wide; posterior projection short; lateral lobe straight; lateral margin slightly convex; anterior pigmented line strongly pigmented, slender; lateral stalk absent. Genitalia ( Figs 33–34View FIGURES 31 – 38): aedeagus strongly mesoconvex, apical region ventrad with lobe long; dorsal paramere about as long as ventral paramere, wider as ventral paramere, inner margin sinuous, outer margin slightly convex; membranous region of basiparamere with apical corner strongly developed; sclerite on volsella base absent.

FEMALE unknown.

Material examined. Holotype, ♂. THAILAND, Chiang Mai, Doi Inthanon NP, checkpoint 2, 18°31.559’N 98°29.941’E, 1700 m, MT, 15–22.VII.2006, Y. Areeluck leg., T73 ( QSBG).GoogleMaps 

Distribution. Thailand (Chiang Mai).

Remarks. See remarks of C. lepidum  comb. nov.


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