Cylloepus bispoi Polizei & Barclay, 2019

Polizei, Thiago T. S. & Barclay, Maxwell V. L., 2019, The genus Cylloepus Erichson, 1847 (Coleoptera: Elmidae: Elminae) new species and combinations, Zootaxa 4652 (1), pp. 93-100 : 95-97

Cylloepus bispoi Polizei & Barclay sp. nov.

( Fig. 1 A–C)

urn:lsid:zoobank.org:act:6DDCB411-5AF6-432B-A0B7-7F497E625969

Type locality. Orellana, Ecuador.

Male holotype: ♂ | Holotype | ECUADOR (Orellana) / Payamino Research Station / 0º 29’ 967”S 77º 17’ 083”W / 300m Tropical Rainforest / At M.V. light at night / 30.vii–12.viii. 2007 | coll. CPDT Gillett / BMNH (E) 2007-65 | NHMUK010583883 ( BMNH).

Paratypes: 21 specimens with the same data as the holotype . 2 ♂; 7 ♀ ( MZSP) ( MZSP 35381 ; 35389) ; 1 ♂; 8 ♀ ( BMNH) and 1 ♂; 2 ♀ ( USNM) .

Diagnosis. Body flattened and elongated. Head covered with micropunctures, antennae with antennomeres 5–9 as wide as long. Pronotum as long as wide, with two yellow patches; one in the anterior third and other in posterior third, superficial longitudinal impression on disc. Prosternal process with apex rounded, without carinae, impressions or tomentum. Legs with the femora gibbous and tibiae thin, with two spines on the distal margin. Abdomen without tomentum on the fifth ventrite. Male genitalia with the phallobase the same size as the parameres; parameres slightly shorter than the penis, which tapers towards its apex, sides almost straight, apex slightly rounded.

Description. Male. Maximum length 3.03mm, maximum width 1.08mm. Body elongated and flattened. Lightbrown colour with mouthparts, antennae and tarsi yellow.

Head: Partly retractable, without impression. Surface with micropunctures. Eyes projecting laterally. Antenna filiform, with 11 antennomeres, with antennomeres 5–9 as wide as long and antennomeres 5–11 with short setae at apex of each antennomere. Clypeus concave, without punctures, with short golden setae. Frontoclypeal suture distinct and straight. Labrum concave, with the posterior-half glossy, without punctures or setae, anterior-half with a few long thin golden setae. Maxillary and labial palpi with 3 palpomeres, with the last palpomere wider than long.

Thorax: Pronotum as long as wide ( Fig. 1A ), (length: 0.82mm, width: 0.84mm), anterior margin convex; lateral margin slightly sinuous and granulated, anterior angles produced, acute; posterior margin trisinuate. Pronotal surface with micropunctures separated by their own diameter with short setae, anterior and posterior portion with two yellow patches. Sublateral carinae reaching the anterior and posterior margin, twice as wide on the anterior portion. Longitudinal impression superficial on the disc, not reaching the anterior and posterior margin ( Fig. 1A ). Elytra (length: 1.96mm, width: 1.08mm), light-brown, longer than wide, anterior margin slightly sinuous, lateral margin straight, apex slightly produced and broadly rounded, humeral angles slightly rounded ( Fig. 1A ). Surface with rows of punctures separated by their own diameter, and ten intervals, well separated by two rows of setae in each interval. Carinae on third interval short, extending for 1/5, and two long sublateral carinae on sixth and eighth intervals ( Fig. 1A ). Epipleura densely covered by tomentum ( Fig. 1B ). Scutellum U-shaped with punctures on the margin. Hind wings macropterous. Prosternum with surface with punctures separated by twice their own diameter, lateral portion covered by tomentum, and anterior margin with golden setae, prosternal process narrow with the apex rounded ( Fig. 1B ). Hypomera slightly longer than wide, without tomentum and with setae randomly arranged. Mesoventrite short with a shallow depression to receive the prosternal process. Metaventrite with the surface covered by tomentum, with punctures separated by twice their own diameter ( Fig. 1B ). Legs (except tarsi) covered by tomentum, with ob- long granules separated by twice their own diameter ( Fig. 1B ). Pro and mesocoxae strongly rounded; femora twice as wide as long in the middle portion, with dense, oblong granules, and short golden setae (except in the ventral por- tion); tibiae long and thin, with many dense setae, with fringe of setae on the distal half and two thorns on the apex; tarsi 5-5-5, with long setae on the ventral distal surface, the fifth tarsomere the same size as all the others combined. Claws long and thin.

Abdomen: Five ventrites, longer than wide ( Fig. 1B ), (length: 1.29mm, width: 1.0mm). Surface covered by granules, separated by twice their own diameter, and each one with short golden setae. First to fourth ventrite covered by tomentum. Fifth ventrite without tomentum and with lateral margins slightly produced posterolaterad.

Genitalia: ( Fig. 1C ); (length: 0.57mm, width: 0.18mm): Phallobase twice as long as wide, the same length as the parameres. Parameres slightly shorter than penis and slightly compressed dorsoventrally; wider at the base, narrower towards the apex, apex rounded. Penis gradually tapering towards apex, sides almost straight, apex rounded; fibula elongated, wide, approximately the same length as the penis.

Female. Similar to the male.

Etymology. The specific name bispoi is in honour of Professor Dr. Pitágoras da Conceição Bispo, in recognition of his work on the aquatic insects of Brazil.

Comparative notes. Cylloepus bispoi sp. nov. can be easily differentiated from any other Cylloepus species by the following morphological characteristics: 1) Body flattened and elongated; 2) pronotum as long as wide, with two yellow patches, one in the anterior third and other in posterior third; 3) superficial longitudinal impression on pronotal disc, not reaching the anterior and posterior margin; 4) ventrites without carinae or a depression and 5) the male genitalia shape.

Figures

FIGURE 1. Cylloepus bispoi sp. nov. Male. Holotype. (A–B) Habitus. (A) Dorsal view. (B) Ventral view. (C) Ventral view of male genitalia. Scale bars: (A–B) = 0.5mm. (C) = 0.1mm.