Ptinella subconcinna, Darby, 2019

Darby, Michael, 2019, Studies of Ptiliidae (Coleoptera) in the Spirit Collection of the Natural History Museum, London, 6: New species and records collected by W. C. Block in Kenya and Uganda, 1964 - 1965, Entomologist’s Monthly Magazine 155, pp. 239-257 : 253-255

Ptinella subconcinna sp. n.

( Figs 13 A–E)

Description

Habitus Fig. 13A, L .. 63mm. Dusky yellow, antennae and pubescence pale yellow. Eyes reduced to points, with a shallow transverse depression between them, width across 0.25mm. Antennomeres III–XI L. 0.30mm. Mentum and prementum chaetotaxy as in Fig. 6I . Pronotum L. 0.20mm, W. 0.31mm, lateral margins evenly rounded to rectangular hind angles, strongly bordered, the border continuing along the posterior margin ( Fig. 13B ). Elytra L. 0.34mm W. 0.35mm, truncate, chaetotaxy ( Fig. 13E ). Proventrum, mesocoxae adjacent. Mesoventrum ( Fig. 13D ), L. 0.13mm, reticulate, without pubescence. posterior margins broadly rounded at lateral corners. Metaventrum ( Fig. 13D ), L. 0.11mm, reticulate and sparsely pubescent, distance between metacoxae 0.10mm. ♀, spermatheca ( Fig. 13B ). ♂, not known.

Remarks: All specimens with eyes reduced to points and apterous.

Diagnosis: The form of the spermatheca distinguishes this species (but see remarks above re P. concinna , which has a form of spermatheca most similar to that in this species).

Etymology: Named after the likeness of the spermatheca to that of P. concinna Johnson.

Material examined

Holotype, ♀, KENYA: Aberdares National Park , 64 miles W. Nairobi, 0°30′S, 36°40′E, x.1965, leg. W.C. Block, BM 1978-472 ( BMNH).

Paratypes, 3 exs, same data as holotype, ( BMNH one mounted verso, one as a disarticulated slide) .

Figures

Fig. 13. — Ptinella subconcinna sp. n. A, habitus; B, spermatheca; C, pronotum ×475; D, meso- and metaventra (image partly obscured by glue) ×580; E, elytral chaetotaxy ×475; Ptinella sp. F, secondary receptacle.

Fig. 6. — Nelloptodes blocki sp. n.. A, habitus; B, aedeagus; Ca, Cb, spermathecae; D, terminal abdominal tergites and ventrites showing position of spermatheca and lack of claws; E, pronotum ×400; F, meso- and metaventra ×470; G, terminal abdominal ventrites ×600; H, proventrum ×470; I, mentum and prementum ×840.