Mesoceration integer, Perkins, 2008

Perkins, Philip D., 2008, Facial affect recognition in individuals at clinical high risk for psychosis, Zootaxa 1864, pp. 1-124 : 42-43

Mesoceration integer new species

( Figs. 59 , 63 , 104 )

Type Material. Holotype (male): South Africa: KwaZulu­Natal Province, Busheladi Stream on Lundy's Hill nr. Deepdale , stones in current, NAT 140J, 29° 45' S, 29° 55' E, 15 June 1972. Deposited in the AMG . Paratypes (183): Lesotho: Drakensberg, Sani Pass Valley , water collection, 29° 36' S, 29° 20' E, 8 March 1976, Endrödy­Younga (#1053) (4 TMSA) ; South Africa: Eastern Cape Province, Isidenge forest , river stones, 32° 41' S, 27° 15' E, 18 November 1987, Endrödy­Younga (#2523) (20 TMSA) ; KwaZulu­Natal Province, Busheladi Stream on Lundy's Hill nr. Deepdale , stones in current, NAT 140J, 29° 45' S, 29° 55' E, 15 June 1972 (12 AMG) ; Injambili River, on inland rd. nr. Umzumbe , stones in current, NAT 74d, 30° 34' S, 30° 25' E, 7 June 1972 (1 AMG) ; Karkloff Grassveld , river stones, 29° 19' S, 30° 15' E, 5 December 1989, Endrödy­Younga & Klimaszewski (#2743) (1 TMSA) ; Karkloof Forest , wet river boulders, in the splash zone of rapids and in water, 29° 19' S, 30° 15' E, 9 December 1989, Endrödy­Younga & Klimaszewsky (# 2754) (18 TMSA) ; Karkloof Grassveld , floating debries, 29° 19' S, 30° 15' E, 12 September 1989, Endrödy­Younga & Klimaszewski (#2753) (4 TMSA) ; Natal Middld, Karkloof for., sifted forest litter, elev. 1300 m, 29° 18' S, 30° 13' E, 5 December 1989, Endrödy­Younga & Klimaszewski (#2745) (1 TMSA) ; Natal Middld, Northington , sifted forest litter, 29° 28' S, 30° 1' E, 12 December 1989, Endrödy­Younga & Klimaszewski (#2764) (5 TMSA) ; Umzumbe River; headwaters at Braeside Store , stones in current; NAT 98N, 30° 14' S, 30° 27' E, 8 June 1972 (1 AMG) ; Weza, Impetyene Forest, forest, +/­ 17 km from Station , shore washing, 30° 38' S, 29° 39' E, 26 November 1989, Endrödy­Younga & Klimaszewski (#2719) (70 TMSA) ; Weza, Impetyene Forest, intercept traps /12 days, in predominantly Podocarpus forest , disturbed but good canopy, open ground, 30° 37' S, 29° 42' E, 16 November 1989, Endrödy & Klimaszewsky (#2681) (1 TMSA) ; Weza, Impetyene Forest , lower forest, shore washing, large and rapid forest river with stony banks, 30° 37' S, 29° 42' E, 19 February 1989, Endrödy­Younga (#2697) (20 TMSA) ; Weza, Impetyene Forest , river stones, rivulette with rapids in forest, 30° 37' S, 29° 42' E, 19 February 1989, Endrödy­Younga (#2696) (21 TMSA) ; Mpumalanga Province, Nelshoogte, Knuckles rocks forest, intercept trap, 41 day, 25° 47' S, 30° 50' E, 24 October 1986, Endrödy­Younga (#2309) (1 TMSA) ; Western Cape Province, Harkerville S. F., Kranshoek Picnic Area , 2nd­growth afromontane forest on cliff above ocean; FMHD #2004­034, berl., wet debris along stream, elev. 145 m, 34° 4' S, 23° 13' E, 1 February 2004, Clarke, Solodovnikov et al. (1096) (3 FMNH) .

Differential Diagnosis. M. integer individuals are recognized among barriotum group members by the lack of an elytral carina, the small size and broad body form (length/width ca. 1.48/0.66), the arcuate elytral margins, and the prominent elytral granules ( Fig. 59 ). The aedeagus of M. integer shows some similarity to that of M. drakensbergensis ( Figs. 63, 64 ), a much larger species (ca. 1.89 mm) that has a very different habitus ( Figs. 60 ).

Description. Size (length/width, mm) holotype: body (length to elytral apices) 1.48/0.66; head 0.26/ 0.40; pronotum 0.36/0.49; elytra 0.87/0.66. Dorsum brown to dark brown, except pronotum lighter laterally, maxillary palpi and legs brown, venter dark brown.

Head with labrum, clypeus laterally, and frons laterally microreticulate, dull or feebly shining. Disc of clypeus and frons shining, sparsely finely punctulate; anteocellar sulci moderately deep. Ocelli distinct. Mentum and submentum microreticulate.

Pronotum cordate, widest near midlength; anterior angles rounded, posterior rectangular; sides margined, feebly crenulate; anterior margin shallowly arcuate over median 3/4, without hyaline border; discal reliefs shining only near median foveae, becoming microreticulate and dull laterally, punctures on shining reliefs separated by about 2–3xpd, size smaller than 1xef; anteriorly and posteriorly with large, deep punctures; with 10 distinct foveae as follows: two median, an anterior elongate and round posterior; a small round anterior and a larger, deeper, oblique, oval posterior admedian; and a large anterior and smaller deep posterior adlateral on each side; foveae microreticulate, dull; each puncture with a fine short seta.

Elytra dull, with very interrupted reflections, granules prominent; sides arcuate, apices conjointly rounded, posterior declivity abrupt, summit at about midlength; sutural apices rectangular; sides smooth, weakly explanate. Serial punctures small, on disc slightly smaller than largest pronotal punctures, progressively finer apically, discal punctures separated by about 1xpd; anterior rim of socket of each punctural seta with minute granule. Series 5 and 6 separated by very narrow 6th interval. Interval width on disc about 1xpd, each with unilinear row of granules,; 8th non­carinate. All punctures bearing a short fine indistinct seta.

Thoracic ventrites and abdominal ventrites 1–4 densely clothed with short setae, except glabrous midlongitudinal ridge on proventrite, mesoventrite plaques, and small glabrous strongly shining subtriangular area basomedially on metaventrite. Metaventrite disc with median impression in posterior 1/2. Abdominal ventrites as follow: 5th similarly clothed basally and laterally, leaving a semilunulate posterior area glabrous and shining; 6th glabrous and obsoletely microreticulate, with posterior band of piliferous punctures.

Legs of male with two spiniform setae on apical protarsomere. Femora and tibiae effacedly microreticulate, femora thickened.

Females with explanate margin of elytra slightly wider than in males, apices more distinctly obliquely truncate.

Wings varying from fully developed to reduced to about 1/2 to 3/4 length of elytra.

Aedeagus length ca. 0.29 mm; main­piece slightly arcuate in ventral view, apex produced on left side hence apex appearing notched, in lateral view arcuate, slightly narrowed at midlength; distal piece short, apex upturned in lateral view ( Fig. 63 ).

Etymology. Named in reference to the compact body form.

Distribution. Widely, but sparsely, distributed in southern and eastern South Africa, and one locality in easternmost Lesotho ( Fig. 104 ).

Figures

FIGURE 59. Mesoceration integer, dorsal and lateral habitus of holotype.

FIGURE 60. Mesoceration drakensbergensis, dorsal and lateral habitus of holotype.

FIGURES 63–66. Mesoceration, aedeagi of holotypes. —63. M. integer. —64. M. drakensbergensis. —65. M. concavum. —66. M. bicurvum.

FIGURES 103–104. Geographical distributions of Mesoceration species.