Glodianus rufithorax Kasparyan & Khalaim, 2024

Kasparyan, Dmitry R. & Khalaim, Andrey I., 2024, Two new species of Glodianus Cameron and Hylophasma Townes (Hymenoptera: Ichneumonidae: Cryptinae) from Mexico, Zootaxa 5437 (4), pp. 571-581 : 573-574

3. Glodianus rufithorax Kasparyan & Khalaim , sp. nov.

( Figs 1–10 )

Material examined. Holotype female ( UNAM), Mexico, Veracruz, Municipio Teocelo, Tejerias , Malaise trap, October 2017, coll. M. López-Ortega.

Paratype. MEXICO: 1 ♀ ( ZISP), same data as holotype .

Description. Female. Body length 15.0 mm, fore wing length 10.0 mm.

Antenna with about 39 flagellomeres; flagellomeres distad the white band distinctly widened, strongly flattened ventrally ( Fig. 1 ); the widest subapical flagellomeres about 3.0× as broad as two apical flagellomeres. Frons with median compressed horn ( Fig. 2 ). Clypeus weakly convex, with lower margin distinctly truncated ( Fig. 3 ).

Epomia long and strong, its upper end above transverse groove subdivided into two or three close wrinkles. Mesoscutum with central lobe evenly, densely and moderately finely punctate; lateral lobes sparsely punctate anteriorly, polished and impunctate in posterior half.Anterolateral part of mesoscutum at base of notaulus with strong transverse rugosity extending towards centre of mesoscutum (wrinkles stronger anteriorly and weaker posteriorly); posterior half of mesoscutum between notauli with strong longitudinal striae extending to scuto-scutellar groove ( Fig. 2 ). Scutellum polished with lateral carinae extending in its basal half. Mesopleuron ( Fig. 4 ) in upper half with oblique longitudinal wrinkles, in lower half with fine and dense punctures; speculum polished; epicnemium and mesosternum with small and dense punctures. Metapleuron entirely with dense oblique wrinkles, without distinct punctures; upper division of metapleuron with irregular wrinkles ( Fig. 4 ). Propodeum ( Figs 6, 7 ) before anterior transverse carina polished dorsally (between long-oval spiracles), with wrinkles around spiracles; behind anterior transverse with strong, dense, parallel rugae; areola distinguished by irregular sculpture.

Fore wing with areolet 0.7× as long as wide and about 0.55× as long as portion of vein 2m-cu above bulla ( Fig. 5 ). Hind wing with nervellus intercepted at lower 0.15 ( Fig. 5 ). Legs slender ( Fig. 1 ). Hind leg with femur 8.0× as long as broad; inner tibial spur 1.9× longer than the outer spur; proportion of length of tarsomeres 1–5 of hind tarsus 8.8: 3.7: 2.6: 0.8: 3.2; inner (the longest) spur 1.25× as long as tarsomere 2; tarsomere 2 almost 1.2× as long as tarsomere 5.

First metasomal segment polished, long and narrow, 4.0× as long as wide at apex; second tergite about as long as its posterior width. Second and subsequent tergites smooth, with very fine and dense punctures and short and dense setae. Ovipositor sheath as long as hind tibia. Ovipositor strongly compressed laterally, with distinct teeth ventrally ( Fig. 9 ); its upper valve dorsally at apex bearing about 11 small oblique ridges, of them four most basal ridges are deeper and extending onto lateral sides of the upper valve ( Figs 9, 10 ); portion of upper valve from the dorsal end of basal ridge ( Fig. 9 , arrow) to apex 1.5× as long as hind tarsomere 2, and 1.3× as long as portion of lower valve from most basal tooth to apex.

Antenna black with scape fulvous and flagellomeres 6 to 11 white (blackish ventrally). Head predominantly red; face, clypeus, mandibles (except for blackish teeth), labrum and palpi yellow. Mesosoma entirely red. All coxae and fore and mid legs (except for brown apical tarsomeres) red. Hind legs with femur and tibia completely black, trochanter and trochantellus black with rufous markings ventrally ( Figs 6, 7 ), spurs brown, tarsus predominantly white with basal 0.3 of basitarsus and extreme base of tarsomeres 2–4 black, and tarsomere 5 brown. Metasoma predominantly black; first segment with basal half of petiole and sternite yellowish red ( Fig. 1 ); tergites 2–7 with hind margins and epipleurae white; tergite 8 with lateral sides widely white; sternites white with black markings laterally.

Male. Unknown.

Etymology. The species name derives from the Latin rufus (red) and thorax (thorax), after the red mesosoma.

Distribution. Mexico (Veracruz).

Comparison. Glodianus rufithorax sp. nov. is easily distinguished from its Mexican congeners by its mostly red head (except reddish yellow face, clypeus and lower part of gena, see Fig. 3 ), mesosoma, fore and mid legs, and hind coxa. Additionally, in the new species the hind tarsomere 2 is almost 1.2× as long as tarsomere 5, while in two other Mexican species the hind tarsomere 2 either 1.0× or 1.5× as long as tarsomere 5.

In its color pattern, G. rufithorax sp. nov. resembles the Venezuelan G. areolatus Taschenberg ( Fig. 11 ), but differs from this species in having fore wing with areolet receiving vein 2m-cu at posterior 0.35 ( Fig. 5 ) (at anterior 0.45 in G. areolatus ), and hind basitarsus black in basal 0.2–0.3 and white in apical 0.7–0.8 ( Fig. 8 ) (black in basal 0.7 and white in apical 0.3 in G. areolatus ).

Figures

FIGURE 11. Glodianus areolatus, ♀, holotype: habitus, lateral.

FIGURES 1–5. Glodianus rufithorax sp. nov., ♀, holotype: 1—habitus, lateral; 2—head and mesoscutum, dorsal; 3—head, antero-lateral; 4—head and mesosoma, lateral; 5—fore wing.

FIGURES 6–10. Glodianus rufithorax sp. nov., ♀, holotype: 6—posterior part of mesosoma and base of metasoma, lateral; 7—propodeum and first tergite, dorsal; 8—apex of metasoma with ovipositor, lateral; 9—apex of ovipositor, lateral; 10—apex of ovipositor, dorsal.