Hemipeplus tuberculatus Pollock, 1999

Kc, Sajan & Pollock, Darren A., 2025, Review of the Hemipeplinae (Coleoptera: Mycteridae) fauna of the world with descriptions of twenty-nine new species, Zootaxa 5574 (1), pp. 1-140 : 29-30

Hemipeplus tuberculatus Pollock, 1999

(Figs 9, 61)

Hemipeplus tuberculatus Pollock, 1999: 67 , Figs 3A, 6A, 12.

FIGURE 9. Hemipeplus tuberculatus Pollock, 1999 (Paratype). A. Dorsal habitus (with scale bar); B. Dorsal head and prothorax; C. Lateral view of head and prothorax; D. Male genitalia dorsal view with spiculum gastrale; E. Tegmen dorsal view (with scale bar); F. Tegmen lateral view with one paramere removed.

Type Material. Holotype, female, labeled: ‘ MEXICO: Guerrero microondas 10.75 km. N. Iguala, 3800-4300’ 21 Sept. 1989 R. Turnbow / [green label] FSCA / [red label] HOLOTYPE Hemipeplus tuberculatus Pollock D.A. Pollock 1997 ’, in UNAM. Two paratypes: 1 specimen, male, labeled: ‘ 8 mi. S. Izuoar de Matamaros , Puebla Mex, XII-10-48 / H.B. Leech Collector / [blue label] PARATYPE Hemipeplus tuberculatus Pollock D.A. Pollock’, in DAPC (Fig. 9) ; 1 specimen, female, labeled: ‘ 9 mi. N. Juajuapan de Leon , 7000’, Oax. Mex., VI.8, 1971, H.F. Howden / [blue label] PARATYPE Hemipeplus tuberculatus Pollock D.A. Pollock’, in DAPC .

Other Material Examined. MEXICO. Oaxaca. MX125 36 km NE Huajuapan de Leon , 18.x.2001, F. Skillman & J. Davidson leg., ( FSCA, 1♀) .

Diagnosis. Hemipeplus tuberculatus can be distinguished by its small eyes, elongate temples, wide pronotal pad, and rufous, dark color. Hemipeplus tuberculatus has the following diagnostic features: temples prominent and elongate (about 1/3 length of eye); scape slightly elongate; eyes small (slightly longer than scape), shallow and less convex; pronotum subcordiform, relatively narrow and elongate without distinct anterior emargination; anterolateral angles moderately produced, broadly rounded; pronotal pad distinct; posterolateral angles obtuse, rounded; pronotal lobe short with median notch; scutellar shield subhexagonal, transverse, twice as wide as long; body elongate; elytra more or less flat; color rufous, elytra slightly darker; distribution: southwest Mexico (Guerrero, Oaxaca, and Puebla).

Male Genitalia (Figs 9D–F). (Tegmen length = 0.52 mm (n = 1)) Lobe of basale short, thin, and apically pointed; shoulders obtusely angled, not much slanted; apicale and basale with distinct suture; apicale narrowed at the base, parameres slightly arcuate near the apices; apices of parameres very pointed and thin; penis subequal to tegmen.

Variation. Females have a median tubercle on the last abdominal ventrite.

Remarks. To our knowledge, this is the only known species of Hemipeplinae in which males and females exhibit distinct external sexual dimorphism.

Geographical Distribution (Fig. 61). Southwest Mexico (Guerrero, Oaxaca, and Puebla).