Caccothryptus tardarsauceae, Matsumoto, 2021

Matsumoto, Keita, 2021, Six new species of the genus Caccothryptus from the Himalayas (Coleoptera: Limnichidae), European Journal of Taxonomy 739, pp. 168-184 : 178-180

Caccothryptus tardarsauceae sp. nov.

urn:lsid:zoobank.org:act:3DAF222E-1DF9-4254-BF38-627576985EA4

Figs 5 , 7E

Diagnosis

Caccothryptus tardarsauceae sp. nov. is within the C. testudo group and can be distinguished by several genital characters: (1) apex of median lobe narrow with tip slightly pointed in ventral view; (2) concave structure between apical emargination narrowly V-shaped with gently pointed end; (3) dorsal side of parameres bisinuate in lateral view; (4) apical emargination of parameres V-shaped in ventral view.

Etymology

This species is named after the American internet celebrity cat ʻTardar Sauceʼ, nicknamed ʻGrumpy Catʼ.

Material examined

Holotype INDIA • ♂; “ Jhatingri , Mandi. Punjab. 6,000ft. H.G.C. // H.G. Champion B.M. 1953-156 // NHMUK011225274”; BMNH.

Description

Male

BODY. Elongate, oval, dorsum convex, EL: 3.64 mm, EW: 2.50 mm, PL: 0.87 mm, PW: 2.11 mm. Colour: dorsal side brown; venter brown, tibia reddish brown, tarsal claws light brown. Dorsal surface

densely covered with long setae with patches of white setae forming a wavy pattern, ventral surface with relatively long setae.

DORSUM. Head: partially retracted into pronotum; overall surface smooth, densely punctured across surface. Antennae: 11 segmented, filiform, fully pubescent, antennomeres long and slender, 1 st AS widest, 2 nd AS narrow and long, 3 rd AS smallest, 4 th –11 th AS long, thin and obtusely angled on one side. Pronotum: transverse, widest at posterior end, narrowest at anterior end, narrower than elytra; anterior margin convex, posterior margin trisinuate, lateral margin convex; surface covered with dense punctation, surface between punctures smooth and shiny. Scutellum: subtriangular, large, lateral sides gently convex. Elytra: longer than wide; anterior margin slightly convex, sinuate; anterior lateral angle nearly right angled, pointed; lateral margins strongly bordered; surface with mixtures of small fine sized punctuations and medium sized punctuations forming irregular near the elytral suture; elytral striae more clearly visible towards lateral end; surface between punctures smooth and shiny.

VENTER. Prosternum: concave on anterior margin, outer lateral margin concave; prosternal process as long as wide, lateral margin sinuated, posterior margin rounded. Mesoventrite: wider than long, narrowed towards posterior; anterior end concave where prosternal process fits, discrimen visible; laterally subparallel and gently curved, posteriorly flat, anteriorly trisinuate. Metaventrite: long and wide, flat on the middle; discrimen thin visible across each end. Abdomen: five clearly visible ventrites. Intercoxal process with pointed apex. Posterior margin of 1 st and 2 nd ventrites convex, 3 rd –4 th ventrites slightly concave around the middle, 5 th ventrite semioval. Surface covered with long, light yellow, recumbent setae.

LEGS. Tibia: protibia with outer and inner lateral margin curved. Meso- and metatibia with outer lateral margin almost straight, inner lateral margin straight. Tarsi: simple, segments increase in length towards the apex, 5 th tarsal segment as long as 1 st –4 th tarsal segment combined. Tarsal claws: long, narrow, symmetrical.

GENITALIA. Aedeagus: elongate, strongly sclerotised. Base: asymmetrical, widest around basal 0.2 from both lateral and ventral view. Median lobe: approximately ¼ length of genitalia; longer than parameres; gently curved on dorsal side, slightly bisinuate on ventral side, widest at middle, narrowing towards the apex, apex with round point in lateral view; apex pointed, split into two on anterior half and edge pointed, lower half of lateral end relatively straight in dorsal view; apical end smooth and narrows inwards in ventral view. Parameres: wider than median lobe in ventral view; apical emargination wide V-shaped, concave structure between parameres elongated and wide V-shaped, with gently pointed end; bisinuate, lower half of sinuation long and shallow, upper half short and slightly deep on dorsal side in lateral view; gently curved on ventral side in lateral view; apex pointed and overlaps with median lobe, majority of parameres overlaps with median lobe in lateral view.

Female

Unknown.

Distribution

Caccothryptus tardarsauceae sp. nov. is known only from the type locality.

Figures

Fig. 5. Caccothryptus tardarsauceae sp. nov., ♂, holotype (NHMUK011225274). A. Dorsal habitus. B. Genitalia, dorsal. C. Genitalia, lateral. D. Genitalia, ventral.

Fig. 7. Close-up of Caccothryptus spp. genitalia ventral apex, ♂, holotype. A. C. brendelli sp. nov. (NHMUK011225276). B. C. arakawae sp. nov. (NHMUK011225268). C. C. championi sp. nov. (NHMUK011225382). D. C. larryi sp. nov. (NHMUK011225324). E. C. tardarsauceae sp. nov. (NHMUK011225274). F. C. abboti sp. nov. (NHMUK011225275).