Caenocryptoides convergens Momoi, 1966

Watanabe, Kyohei, 2020, Expression of green fluorescent protein defines a specific population of lamina II excitatory interneurons in the GRP :: eGFP mouse, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 49, pp. 29-66 : 39

Caenocryptoides convergens Momoi, 1966

( Figs 6 A-C)

(Standard Japanese name: Kisuji-togari-himebachi)

Caenocryptoides convergens Momoi, 1966: 162 .

Description. Male (n=1). Body polished, covered with silver setae, length 14.5 mm. General character states similar to female.

Head 0.6 × as long as wide, punctate. Clypeus 0.48 × as long as maximum wide, convex in lateral view, its apical margin narrowly reflexed, with a median obtuse tooth and a pair of lateral convexities. Face 0.57 × as long as maximum wide, densely punctate, slightly convex medially in lateral view. Frons densely punctate except for a smooth area above antennal sockets. Length of malar space 0.6 × as long as basal mandibular width. Base of mandible slightly convex. Upper tooth of mandible almost as long as lower tooth. OD: POL: OOL = 1.0: 1.5: 1.7. Flagellum with 34 segments, with tyloid from FL 16 to FL 20. FL I 3.75 × as long as maximum depth in lateral view and 1.22 × as long as FL II.

Mesosoma. Lateral aspect of pronotum punctate dorsally, longitudinally strigose ventrally and posteriorly. Epomia present. Posterior end of notauli reached to middle of mesoscutum. Mesoscutum densely punctate. Scutellum sparsely punctate. Mesopleuron largely rugose, with a smooth area on speculum. Mesosternum without a median part of posterior transverse carina. Metapleuron reticulate rugose. Juxtacoxal carina absent. Propodeum punctate on area externa and strongly reticulate rugose on areas behind anterior transverse carina. Anterior section of lateromedian longitudinal carina present except for anterior part. Anterior transverse carina complete. Posterior transverse carina complete except for median part largely absent. Pleural carina present. Propodeal spiracle elongate. Area basalis trapezoidal, widened anteriorly. Fore wing length 9.5 mm. Areolet pentagonal, vein 2rs-m and vein 3rs-m convergent anteriorly. Hind femur 6.9 × as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 3.8: 2.0: 1.25: 0.5: 0.9.

Metasoma. T I 2.6 × as long as maximum width, punctate, with a pair of strong convexities at base of spiracle, without latero-median carina, with dorso-lateral carina but largely indistinct, with a pair of triangular convexities at base. T II 1.6 × as long as maximum width. T II, T III and T IV densely and finely punctate.

Colouration ( Figs 6 A-C). Similar to female. Body (excluding wings and legs) black to blackish brown, except for: clypeus, face, malar space, gena except for posterior and dorsal areas, frons and vertex except for median area, palpi, propleuron, dorsal spots of pronotum, scutellum, postscutellum, tegula, subtegular ridge, posterior spot of mesopleuron, longitudinal stripe along sternaulus on mesosternum, upper division of metapleuron, posterior part of propodeum, posterior margin of each metasomal tergite and membranous part of metasomal sternites yellow to whitish yellow; FL XI to FL XX white. Wings hyaline. Veins and pterostigma blackish brown to brown except for yellowish brown wing base. Coxae, trochanters and trochantelli whitish yellow with black area(s) in fore and mid legs and black with whitish yellow area in hind leg. Femora, tibiae and fore and mid tarsi reddish brown. Apex of mid and hind femora and tibiae tinged with blackish brown to black. Hind tarsus white except for base of TS I and apex of TS V blackish brown to black.

Material examined. JAPAN, TMNH, F, Aichi Pref., Toyohashi City, Imure Town, Takeyama , 26. IV. 2017, S. Morishita leg. ; TMNH, M, Aichi Pref., Toyohashi City, Oiwa Town, Taimatsu-toge , 1–11. VII. 2019, S. Morishita leg. (MsT) ; MNHAH, F (holotype of C. convergens ), Hyogo Pref., Sasayama , 13. VI. 1955, K. Iwata leg.

Distribution. Japan (Honshu).

Remarks. This is the first description of the male of this species. This species resembles Ca. nigrifacies in many character states especially body coloration, but they can be distinguished by the body length more than 15 mm (12 mm in Ca. nigrifacies ), the propodeum with yellow marking(s) (entirely black in Ca. nigrifacies ) and the hind coxa with a yellow marking (entirely black in Ca. nigrifacies ). The yellow marking of this species varies in size (e.g., it on frons, face and pronotum) and thus the taxonomic position of Ca. nigrifacies should be reviewed in the future study.

Figures

Fig.6. Caenocryptoides convergens Momoi,1966 (A-C,TMNH) and Cryptus daidaigaster sp.nov.(D-J, NIAES) ― A, D, I, lateral habitus; B, E, head,mesosoma and metasoma,dorso-lateral view; C, F, J, head,frontal view;G, propodeum, dorsalview; H, right wings.