Trichonotuloides latecrenatus ( Bates, 1887 )

Dellacasa, Marco, Dellacasa, Giovanni & Gordon, Robert D., 2014, Systematic revision of the genus Trichonotuloides Balthasar, 1945 with description of two new Mexican species (Coleoptera: Scarabaeidae: Aphodiinae), Insecta Mundi 2014 (383), pp. 1-9 : 8

Trichonotuloides latecrenatus ( Bates, 1887)

( Figures 16–20 )

Aphodius latecrenatus Bates, 1887: 86 ; Blackwelder 1944: 212.

Aphodius (Amidorus) latecrenatus ; Dellacasa, 1988: 150.

Aphodius (Trichonotuloides) fossulatipennis Balthasar 1945: 44 ; Dellacasa 1988: 258.

Trichonotuloides fossulatipennis ; Dellacasa et al. 2001: 293; Dellacasa et al. 2002: 181 (lectotype designated and new synonymy).

Trichonotuloides latecrenatus ; Dellacasa et al. 2002: 181; Skelley et al. 2007: 7.

Type locality. Totonicapam [ Guatemala].

Type repository. Natural History Museum. London. (type examined).

Redescription. Length 4.0– 4.5 mm, oblong-oval, moderately convex, subshiny; head glabrous, sides of pronotum and elytral interstices shortly pubescent. Dark brownish; clypeal margin, fore angles of pronotum and elytral apex ferrugineous; antennal club piceous; legs brown-reddish; inferior side brownish. Head rather large; epistome slightly gibbous at centre, somewhat depressed toward clypeal margin, distinctly and regularly punctured, punctation sparser on median gibbosity; clypeus feebly sinuate at middle, round at sides; genae obtusely round, shortly ciliate, distinctly protruding from the eyes; frontal suture somewhat raised, mutic; front regularly and coarsely punctured, punctation coarser than on epistome. Pronotum transverse, convex, dually, rather regularly and very densely and coarsely punctured; large punctures, three to four times larger than small, distinctly cariose and mainly on sides shortly piligerous, near base with a belt of larger contiguous and coarser punctures; lateral margins nearly straight, thickly bordered, edge glabrous, subsinuate before hind angles; latter obliquely truncate and inwardly sinuate; base feebly bisinuate, distinctly bordered. Scutellum basally and laterally coarsely punctured, toward apex subcarinate and smooth. Elytra oval-elongate, with distinct humeral denticle, broadly and deeply striate; striae almost as broad as interstices, strongly crenulate on disc, toward apex canaliculate and indistinctly punctured; interstices convex, densely, coarsely and rather irregularly punctured, toward apex punctures more superficial and somewhat confusedly confluent, quite densely and shortly pubescent. Fore tibiae spur slender and acuminate in both sexes. Hind tibiae upper spur distinctly shorter than first tarsal segment; latter as long as following three segments combined. Male: frontal suture relatively more distinct, somewhat raised; pronotum less convex and not narrowed anteriorly; metasternal plate spoon-shaped and shortly pubescent distally; aedeagus Fig. 19–20 . Female: frontal suture almost obsolete; pronotum relatively more convex and somewhat narrower anteriorly; metasternal plate almost flat, nearly glabrous.

Material examined. GUATEMALA: Totonicapam, 85 – 10,500 ft., leg. Champion (lectotype and 4 paralectotypes, CNCI, MNHN, NHML). MEXICO: Chiapas: San Cristobal de las Casas, El Chivero dint., 16 o 40’27.1”N- 092 o 30’23.1”W, m 2100, 03.VII.2002, leg. Dellacasa M. & Martínez I. (1 ex., DCGI).

Distribution. Guatemala, Mexico (Chiapas).

Biology. The sole Mexican specimen was collected in sheep dung in summer.

Figures

Figures 11–20. Trichonotuloides hansferyi, new species (Los Laureles, Ixhuacán de los Reyes, Veracruz, Mexico). 11) Epipharynx. 12–13) Habitus (length ideogram and morphological details). 14–15) Aedeagus (dorsal and lateral views). Trichonotuloides latecrenatus (Bates, 1887) (Totonicapam, Guatemala). 16) Epipharynx. 17–18) Habitus (morphological details and length ideogram). 19–20) Aedeagus (dorsal and lateral views).