Cautires yausai Nakane, 1969

BOCAK, L. & MATSUDA, K., 2003, Review of the immature stages of the family Lycidae (Insecta: Coleoptera), Journal of Natural History 37 (12), pp. 1463-1507 : 1493-1494

Cautires yausai Nakane, 1969

Differential diagnosis. Cautires yausai is characterized by separately attached movable urogomphi, small terga and straight lateral processes of T2 and T3.

Description of mature larva. Body widest in basal part of abdomen (figures 83, 84), sclerites brown, small. Membranes extensive, yellowish-white. Lateral part of epicranium membranous. Eyes small. Mandibles slender, long, slightly curved. Mala vestigial, small membranous tubercle with apical seta present at base of palpifer. Maxillary palpi slender, slightly longer than palpifer. Labial palpi minute. Terga T1–T3 and A1–A8 divided in two small tergites (figures 83, 84). Prothoracic tergites largest, each with small anterior process. Tergites T2 and T3 simple, subquadrate. Prosternum very small, subtriangular, precoxale T1 free, triangular (figure 85). Sterna T2 and T3 small, less sclerotized. Spiracular plate T2 located on ventral side of body, small, simple, with spiracular opening at anteroventral margin, long, fingerlike, dorsal process attached independently to membrane. Posterior pleurites absent. Abdominal terga A1–A8 shallowly incised at posterolateral margin, accompanied by long stick-like process. Upper pleurites with spiracular opening at posterodorsal margin and similar process behind pleurite (figure 81). Lower pleurite much smaller. Segment A9 with small, undivided tergum and long urogomphi attached independently to membrane (figure 87).

Measurements. BL 12.9 mm, PL 0.94 mm, PW 1.49 mm.

Pupa. Exarate, pronotum with long, slender processes, two at frontal and two at lateral margins, two in posterior angles, additional two shorter processes at middle of posterior pronotal margin. Abdomen with similar processes in dorsolateral part and posterior abdominal spiracles. Segment A8 with Y-shaped urogomphi. Dorsolateral processes and urogomphi pigmented, more sclerotized, with numerous minute tubercles each bearing very minute seta. Remaining tubercles soft, mostly membranous, with similar, small tubercles.

Material examined. Japan, Hyogo Pref., Kawanishi-city , 8.iii.1978, K. Matsuda lgt., six mature larvae, ( KMCT, LMBC). Japan , Kyoto Pref., Maizuru city, Mt. Yorosan , 5.v.1997, T . Ochi lgt., reared in laboratory, pupation on 3.v and 5.v.1997, one male emerged 14.v.1997, two females 17.v and 20.v.1997 ( KMCT) .

Remark. Mature larvae from Kawanishi city occurred under bark of blighted red pine trunk, Pinus densiflora (Matsuda, pers. obs.). The larvae from Mt. Yorosan were collected from a decaying walnut tree, Pterocarya rhoifolia Sieb. et Zucc. (Ochi, pers. com.).