Dolichosoma Stephens, 1830

Miao, Jialin, Liu, Haoyu, Tong, Junbo & Yang, Yuxia, 2024, First record of the genus Dolichosoma Stephens (Coleoptera, Dasytidae) from China, with two newly-recorded species, Biodiversity Data Journal 12, pp. e 129639-e 129639 : e129639-

Dolichosoma Stephens, 1830

Dolichosoma (Dolichosoma) Stephens, 1830 - Stephens 1830: 318.

Dolichosoma (Dolichomorphus) Fiori, 1905 - Fiori 1905: 81.

Dolichosoma (Dolichosoma) lineare ( Rossi, 1794)

Diagnosis

Body extremely slender, blackish-green, covered with whitish pubescence on elytra and a few erected black setae on head and elytral apices (sometimes also on pronotum). Ultimate abdominal ventrite slightly emarginate in middle of posterior edge, present with short central process at anterior edge (Fig. 3 A and Fig. 6 A). Aedeagus: median lobe with apical limb much longer than basal limb, which are vertical to each other; internal sac very short and covered with two lines of large and highly sclerotised black spines (Fig. 3 E and Fig. 6 E); tegmen with lateral processes parallel, present with two lobes at apex (Fig. 3 C and Fig. 6 C).

Distribution

Palearctic Region of Eurasia.

Figures

Figure 3. Dolichosoma (Dolichomorphus) femorale Morawitz, 1861, male: A ultimate abdominal ventrite (apical sternite), ventral view; B pygidium (apical tergite), dorsal view; C tegmen, ventral view; D median lobe, ventral view, E median lobe, lateral view; F spiculum gastrale, ventral view. Scale bars: 0.2 mm.

Figure 6. Dolichosoma (Dolichosoma) lineare (Rossi, 1794), male: A ultimate abdominal ventrite (apical sternite), ventral view; B pygidium (apical tergite), dorsal view; C tegmen, ventral view; D median lobe, ventral view; E median lobe, lateral view; F spiculum gastrale, ventral view. Scale bars: 0.2 mm.