Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 97. (Budapest 2005)

Kirejsthuk, A. G.: On the fauna of Nitidulidae (Insecta, Coleoptera) from Taiwan with some taxonomical notes

Diagnosis - This new species belongs to the mandibularis group of the subgenus Micruria REITTER, 1875 [E. (M.) accidentis KlREJTSHUK, 1990, E. (M.) bullata KlREJTSHUK, 1998, E. (M.) calcarifera KlREJTSHUK, 1998, E. (M.) dentipes HlSAMATSU, 1961, E. (M.) dura REITTER, 1884, E. (M.) indochinensis KlREJTSHUK, 1990, E. (M.) mandibularis REITTER, 1873, E. (M.) punctata KlREJTSHUK, 1992, E. (M.) rhombica KlREJTSHUK, 1990]. The combination of characters of this new species is quite distinct and allows to identify it. The long subapical process of protibia of the new species can be compared only with that in E. (M.) calcarifera. Furthermore, E. (M.) spiculata sp. n. has quite characteristic subtruncate apex of the female pygidium. Apart from the characteristic aedeagus and very long subapical process of protibia, this new species can be distinguished from other members of the mandibularis group by other characters. In particular, it differs from: -E. (M.) accidentis in the darker body coloration, type of puncturation, markedly shorter elytra, pronotum with rounded posterior angles and more narrowed anteriorly, structure of ovipositor; - E. (M.) bullata in the darker and larger body, type of puncturation, longer labral lobes, arcuately emarginate posterior edge of metasternum between coxae, structure of ovipositor; - E. (M.) calcarifera in the larger and not bicolorous body, longer labral lobes, pronotum much wider and with not so steeply sloping sides, longer elytra, more widely separated metacoxae, narrower male protarsi; - E. (M.) dentipes in the much more distinct and very dense puncturation of dorsum, finer and less conspicuous pubescence, much longer subapical process of protibia, longer last labial palpomere; - E. (M.) dura in the more slender body, rounded posterior angles of pronotum, subtruncate apices of elytra, long subapical process of protibia; - E. (M.) indochinensis in the darker body, longer and not subquadrangular pronotum with not so steeply sloping sides, longer elytra, much narrower protibia; - E. (M.) mandibularis in the finer and less conspicuous pubescence, longer and not subquadrangular pronotum, shorter elytra, less distinct finer and extremely dense puncturation, narrower protarsus; - E. (M.) punctata in the oval (not subparallel-sided) and much darker body, not so distinct and extremely dense puncturation of dorsum, shorter elytra, large tooth at base of claw; - E. (M.) rhombica in the darker and larger body, much denser puncturation, narrower and comparatively longer elytra, strongly toothed tarsal claws, simple male metatibia. Etymology - The name of this new species means "spicula" (stick), pertaining to the long and sharp subapical process of protibia.