Diochus maculicollis FAUVEL, 1891: 106 A review of the Neotropical genus Diochus ERICHSON, 1840 (Coleoptera: Staphylinidae: Staphylininae) Irmler, Ulrich Beiträge Zur Entomologie = Contributions to Entomology 2017 2017-06-30 67 1 1 62 369YZ FAUVEL, 1891: 106 FAUVEL 106 1891 [831,1233,915,942] Insecta Staphylinidae Diochus Animalia Coleoptera 21 22 Arthropoda species maculicollis   Figs 22A–C, 39I, 43F   Type material examined:  3 syntypes: Venezuela: Caracas,  1 male, without further data ( IRSB);  1 male, 1 female, Colonia Tovar,  1.11.1888leg. E. Simon( IRSB).  Further material examined:  Panama: Chiriqui, Cerro Colorado,  1290 melev., tree buttress, female,  10.1.1981, leg. W. Suter( FMNH);  Venezuela: without additional information to location, 3 males, 1858, Moritz, coll. Schaufuss, det. as  D. nanus(1 ZMUH, 2 NMW);  Pittier National Park, moist forest, wet litter, male,  26.3.1998, leg. C. Schimdt( UIC);  Carabobo, Bejumaenv. Cerro de Paja( 68°14'W, 10°16'N),  1400–1500 melevation, female,  15.11.2005, leg. V. Brachat( VAC);  Caracas, 2 females, without more data, coll. Kraatz( SDEI);  Edo.  Aragua,  19 kmN Maracay, road to Choroni,  1300 melev., litter near stream, 3 males, 3 females,  16.4.1994, leg. L. Herman#2798-2799 (5 AMNH, 1 UIC); same Prov,  18.9 kmS Choroni,  2900 ft.elev., litter near stream, male,  2.3.1992, leg. L. Herman( AMNH);  Ecuador: Napo Prov.,  5 kmS Baezaon road to Tena,  1700 melevation, under rocks and logs, female,  28.4.1990, leg. C. Carlton& R. Ardave( KNHM);  Napo,  33 kmN Tena, 59 kmE on Loreto Road,  2,800 ft.elev., litter on dry slope, male,  4.11.1988, leg. L. Herman( AMNH);  Napo Prov.,  5.5 kmS Baeza,  5800 ft.elev., Baeza-Tena rd., litter near stream, female,  28.5.1993, leg. L. Herman#2751-2765 ( AMNH).   Diagnosis: Within the group,  D. maculicollisis similarly sized as  D. brooksiand  D. ecuadoriensis. It can be distinguished from both species by the orange to yellow colouration of the head and pronotum and the lighter antennae. Moreover, the setation of the paramere is different. Whereas  D. maculicollishas three short setae, two subapical setae at inner side and one apical seta,  D. brooksiand  D. ecuadoriensishave three long setae at outer edge of paramere.   Description: Length: 3.2 mm. Colouration: yellow; head slightly darker yellow, elytra dark, nearly black; abdomen slightly lighter than elytra; legs yellow; antennomeres 1–3 yellow; 4–7 brown; 8–11 light yellow. Head: 0.50 mmlong, 0.38 mmwide; eyes not prominent; large; EL: HL = 0.29; temples 1.5 times as long as eyes; slightly divergent posteriad; PW: EW = 1.15; posterior angles widely rounded; on clypeus, on interocular space and on temples with sparse, but deep setiferous punctures; on clypeus and on interocular space two longitudinal lines with four to five punctures; between inner lines with wide impunctate midline; vertex impunctate; without microsculpture; surface shiny. Antennae as long as head and half of pronotum combined; antennomeres 1 to 3 elongate; approximately twice as long as wide; first antennomere slightly thicker than following ones and with long thick setae; fourth antennomere quadrate; following antennomeres approximately twice as wide as long; antennomeres four to 11 pubescent. Pronotum: 0.52 mmlong, 0.46 mmwide; widest at middle; sides slightly rounded and narrowed to anterior and posterior angles; angles widely rounded; lateral margin fine; in dorsal aspect, covered in anterior half; very sparsely punctate; longitudinal line of three to four setiferous punctures on each side of wide impunctate midline; laterad few more setiferous punctures; without microsculpture; surface shiny. Elytra: 0.50 mmlong, 0.60 mmwide; widest at posterior angles; posterior margin triangularly emarginate; continuously divergent from shoulders to posterior angles; shoulders widely rounded; setiferous punctures in longitudinal lines; one line directly adjacent to suture line; three lines on disk and two further lines laterad; indistinct, irregular extremely weak ground-sculpture; less shiny than head and pronotum. Abdomen densely pubescent and matt in contrast to fore-body. Aedaegus elongate; seminal vesical of endophallus elongate; approximately two third of total length of central lobe; basal inner duct with short loop in anterior half; paramere with broad basal part and sinuate apical part; in apical half two short setae pointing to inner side; at apex another short seta at outer edge; several sensillae at basal shaft. Spermatheca irregularly coiled; bursa copulatrix in lateral position to coiled duct. [1067,1395,1001,1026] Venezuela Venezuela 21 22 3 syntype [794,1198,1033,1057] IRSB Venezuela 21 22 1 1 syntype 1888-01-11 IRSB E. Simon Venezuela 21 22 2 1 1 syntype 1981-10-01 FMNH W. Suter Panama 1290 Cerro Colorado 21 22 1 Chiriqui ZMUH, NMW Moritz Venezuela Schaufuss Venezuela 21 22 3 3 1998-03-26 UIC C. Schimdt Venezuela Pittier National Park 21 22 1 2005-11-15 VAC V. Brachat Venezuela 1450 10.266666 Cerro de Paja 1298 -68.23333 Bejuma 21 22 1 Carabobo SDEI Kraatz Venezuela Caracas 21 22 2 2 [1350,1395,1417,1441] Venezuela Edo 21 22 1 1994-04-16 AMNH, UIC L. Herman Venezuela 1300 Choroni 21 22 6 3 3 Aragua 1992-03-02 AMNH L. Herman Venezuela 884 Prov 21 22 1 1990-04-28 KNHM C. Carlton & R. Ardave Ecuador 1700 Tena 21 22 1 Napo 1988-04-11 AMNH L. Herman Ecuador 853 Loreto Road 21 22 1 Napo 1993-05-28 AMNH L. Herman Ecuador 1768 Baeza-Tena rd. 21 22 1 Napo