Notodoma Lacordaire, 1854

Seung, Jinbae, Lee, Seunghyun, Lee, Minhyeuk & Lee, Seunghwan, 2024, A new species of the genus Notodoma Lacordaire, 1854 (Coleoptera, Histeridae, Exosternini) from Korea, with a revised key to species of the genus, Zootaxa 5519 (1), pp. 143-150 : 144-145

Genus Notodoma Lacordaire, 1854

Notodoma Lacordaire, 1854: 266 . Type species: Notodoma globatum Marseul, 1855

Diagnosis. Body globose, strongly convex; mostly reddish to blackish brown with yellow maculae on elytral base; head long; mandible slender; frontal stria well-developed; pronotum with complete marginal stria; elytral dorsal striae 1, 2, 4, and sutural stria usually crenulate, complete; propygidium almost hexagonal, strongly convex; prosternal keel with carinal striae, emarginated at apex; mesoventrite bi-emarginate at anterior margin, with a distinct projection at middle; intercoxal disc of metaventrite with a pair of oblique striae, converging at median longitudinal groove; legs slender, with 7–12 denticles on outer margin; tarsal groove of protibia deep, straight ( Lacordaire, 1854; Marseul, 1855; Ôhara & Nakane, 1989; Yélamos & Tishechkin, 1996).

A key to species of the genus Notodoma (revised based on Yélamos & Tishechkin, 1996)

1. Mesoventrite without secondary marginal stria between mesoventral marginal stria and antero-lateral angles of mesoventrite on each side............................................................................................ 2

- Mesoventrite with secondary marginal stria between mesoventral marginal stria and antero-lateral angles of mesoventrite on each side............................................................................................ 3

2. Meso-metaventral suture not impressed, with crenulate stria; intercoxal disc of metaventrite with a pair of oblique striae, extending from each anterior angle of metacoxae, converging at basal eight-tenths of median longitudinal suture N. rufulum

- Meso-metaventral suture impressed, without crenulate stria; intercoxal disc of metaventrite with a pair of oblique striae, extending from each anterior angle of metacoxae, converging at basal seven-tenths of median longitudinal suture.................................................................................................... N. solstitiale

3. Intercoxal disc of metaventrite without oblique striae, only with several aligned punctures with a fine and short stria opposite to metacoxae, not converging on the median longitudinal suture.......................................... N. lewisi

- Intercoxal disc of metaventrite with oblique striae, complete and crenulate, converging on the median longitudinal suture... 4

4. Mesoventrite with medially interrupted secondary marginal stria; mesoventral marginal stria complete; elytral dorsal stria 3 composed by several distinct crenulate impressions................................................. N. globatum

- Mesoventrite with complete secondary marginal stria; mesoventral marginal stria interrupted at middle; elytral dorsal stria 3 absent or composed by shallow impressions................................................................ 5

5. Elytral surface deeply and densely punctate, abruptly rugose and strigate near apex; two epipleural striae complete................................................................................................. N. strigosulum

- Elytral surface finely and sparsely punctate, neither rugose nor strigate near apex; only one epipleural stria complete...... 6

6. Frontal stria parallel-sided, broadly interrupted anteriorly; meso-metaventral suture not impressed, with crenulate stria; intercoxal disc of metaventrite with a pair of oblique striae, extending from each anterior angle of metacoxae, converging at basal three-fifths of median longitudinal suture.................................................... N. fungorum

- Frontal stria W-shaped, narrowly interrupted anteriorly at middle; meso-metaventral suture impressed, without crenulate stria; intercoxal disc of metaventrite with a pair of oblique striae, extending from each anterior angle of metacoxae, converging at basal four-fifths of median longitudinal suture............................................... N. koreanum sp. n.