Heinzia Korge, 1971

Gusarov, Vladimir I. & Koval, Alexander G., 2002, A revision of the genus Heinzia Korge, 1971 (Coleoptera: Staphylinidae: Quediina), with description of a new species and its probable larva, Zootaxa 69, pp. 1-19 : 2-3

Heinzia Korge, 1971 ( Figs. 1­48 )

Heinzia Korge, 1971: 33 .

Heinzia: Smetana, 1977: 181 . Heinzia: Coiffait, 1978: 284 . Heinzia: Smetana, 1995: 131 . Heinzia: Herman, 2001: 3054 .

Diagnosis. Heinzia can be distinguished from other genera of the subtribe Quediina by the combination of the following characters: head on disc with dense punctation; antennae filiform with all segments longer than wide, first article shorter than second and third combined, penultimate article 1.3 times as long as wide ( Fig. 12 ); segments of labial palpus glabrous, last segment cylindrical, 1.5 times as long as second ( Fig. 5 ); pronotum on disc with numerous scattered punctures ( Figs. 10­11 ), with 3 (in some specimens 2 or 4) punctures in dorsal row; prothoracic hypomera inflected and invisible in lateral view; female abdominal tergum 10 is split in two lateral lobes devoid of setae and bears sclerotized and setose medial process protruding posteriorly beyond posterior margin of the lateral lobes ( Figs. 33­35 ).

Heinzia is most closely related to Strouhalium Scheerpeltz, 1962 and Beeria Hatch, 1957 ( Korge 1971; Smetana 1977, 1995).

Heinzia differs from Beeria in having prothoracic hypomera invisible in lateral view, numerous punctures in lateral portions of pronotum, protarsi equally dilated in both sexes, entire paramere, and modified female abdominal tergum 10.

Heinzia differs from Strouhalium in having glabrous segments of labial palpus ( Smetana 1995) and modified female abdominal tergum 10.

Description. Length 8.5­11.5 mm. Body from brownish black to black, legs brown with lighter tarsi and black inner surface of tibia, mouthparts and bases of antennal segments brown to brownish red.

Head as long as wide, on disc with dense punctation except in anterior impunctate portion ( Figs. 8­9 ), eyes slightly shorter than temples; infraorbital ridge absent; gular sutures separate. All antennal articles longer than wide, first article shorter than second and third combined, article 10 ­ 1.3 times as long as wide, last article 1.7­1.8 times as long as wide ( Fig. 12 ). Labrum strongly transverse, with deep medial emargination and strong setae at anterior margin ( Fig. 2 ). Adoral surface of labrum (epipharynx) densely covered with very fine setae, at anterior margin with dense row of long setae ( Fig. 1 ). Mandibles slender with double tooth at inner margin ( Fig. 3 ). Fourth segment of maxillary palpus fusiform, 5.5 times as long as wide, and 1.8 times as long as third ( Fig. 4 ). Ligula with apical emargination, labial palpus glabrous, third segment 1.5 times as long as second ( Fig. 5 ). Lateral area of prementum with three pores and single spinose pore ( Fig. 5 ). Hypopharyngeal lobes as in Fig. 6 . Mentum strongly transverse, with slightly concave anterior margin ( Fig. 7 ).

Pronotum on disc with dense scattered punctation ( Figs. 10­11 ). Dorsal rows with 3 (in some specimens 2 or 4) punctures, hard to distinguish from scattered punctures. Prothoracic hypomera inflected, invisible in lateral view. Proepisterna large. Mesosternal process sharp, 0.4­0.5 times as long as mesocoxal cavity. Tarsi shorter than tibiae. All tibiae spinose. Tarsal formula 5­5­5, tarsal segments setose dorsally. Protarsal segments 1­ 4 dilated equally in both sexes. First segment of metatarsus as long as second and third combined, last segment much longer than first ( Fig. 13 ). Two long empodial setae present. Wings fully developed.

Abdominal tergum 7 with wide white palisade fringe. Male sternum 8 with medial emargination ( Figs. 14­17 ). Female tergum 10 split into two broad lateral lobes (LL; Figs. 33, 35 ), the lobes poorly sclerotized and devoid of setae. Long sclerotized and setose medial process (MP; Figs. 33, 35 ) attached at basis of tergum where the lobes meet and extended posteriad beyond margin of the lobes ( Figs. 33­35 ).

Median lobe of aedeagus straight (in lateral view) ( Figs. 21, 23 ), with single subapical tooth on ventral surface ( Figs. 24, 26 ). Paramere with 15­20 peg­like setae ( Figs. 25, 27 ). Internal sac with single basal diverticulum ( Figs. 21, 23 ). Aedeagus at rest with basal orifice facing left.

Type species. Heinzia variabilis Korge, 1971 , by original designation.

Figures

FIGURES 1 ­ 7. Mouthparts of Heinzia caucasica Gusarov & Koval, sp. nov. (paratype from Baribana cave). 1 – epipharynx; 2 – labrum; 3 – left mandible, dorsal view; 4 – right maxilla, ventral view; 5 – prementum; 6 – hypopharynx, left portion not shown; 7 – mentum. Scale bar 0.4 mm (1 ­ 5), 0.2 mm (6 ­ 7).

FIGURES 8 ­ 13. Details of Heinzia caucasica Gusarov & Koval, sp. nov. (8, 10, holotype; 12 ­ 13, paratype from Baribana cave) and H. variabilis Korge (9, Kalkanl Da {lar; 11, holotype). 8 ­ 9 – head; 10 ­ 11 – pronotum; 12 – left antenna; 13 – right metatarsus. Scale bar 1 mm (8 ­ 12), 0.4 mm (13).

FIGURES 14 ­ 19. Details of Heinzia caucasica Gusarov & Koval, sp. nov. (14, 16, 18, paratype from Dolgaya cave) and H. variabilis Korge (15, 17, 19, Kalkanl Da {lar). 14 ­ 15 – male sternum 8; 16 ­ 17 – apex of mail sternum 8; 18 ­ 19 – male sternum 9. Scale bar 1 mm (14 ­ 15), 0.5 mm (16 ­ 19).

FIGURES 20 ­ 23. Aedeagus of Heinzia caucasica Gusarov & Koval, sp. nov. (20 ­ 21, paratype from Mezmay) and H. variabilis Korge (22 ­ 23, Kalkanl Da {lar). 20, 22 – ventral view; 21, 23, lateral view. Scale bar 0.4 mm.

FIGURES 24 ­ 27. Details of aedeagus of Heinzia caucasica Gusarov & Koval, sp. nov. (24 ­ 25, holotype) and H. variabilis Korge (26 ­ 27, holotype). 24, 26 – median lobe, ventral view; 25, 27, paramere. Scale bar 0.2 mm.

FIGURES 28 ­ 32. Apex of median lobe of aedeagus (lateral view) of Heinzia caucasica Gusarov & Koval, sp. nov. (28, paratypes from Mezmay; 29 ­ 30, Baribana cave; 31, Akhty) and H. variabilis Korge (32, Kalkanl Da {lar). Scale bar 0.2 mm.

FIGURES 33 ­ 35. Details of female tergum 10 of Heinzia caucasica Gusarov & Koval, sp. nov. (33, 35, Baribana cave) and H. variabilis Korge (34, paratype). 33 ­ 34 – dorsal view; 35 – lateral view; LL – lateral lobe of female tergum 10; MP – medial process of female tergum 10. Scale bar 0.3 mm.

FIGURES 36 ­ 38. Details of probable larva of Heinzia caucasica Gusarov & Koval, sp. nov. (Baribana cave). 36 – habitus, dorsal view; 37 – head, dorsal view, 38 – head, lateral view. Scale bar 5 mm (36), 0.8 mm (37 ­ 38).

FIGURES 39 ­ 45. Details of probable larva of Heinzia caucasica Gusarov & Koval, sp. nov. (Baribana cave). 39 – prementum; 40 – left mandible, dorsal view; 41 – left antenna; 42 – left maxilla, ventral view; 43 – protibiotarsus; 44 – apex of protibiotarsus; 45 – nasale. Scale bar 0.2 mm (39 ­ 43, 45), 0.1 mm (44).

FIGURES 46 ­ 47. Details of probable larva of Heinzia caucasica Gusarov & Koval, sp. nov. (Baribana cave). 46 ­ gula; 47 ­ pygopod and urogomphi. Scale bar 1 mm (46), 0.5 mm (47).

FIGURE 48. Geographical distribution of Heinzia Korge. Solid circles – H. caucasica Gusarov & Koval, sp. nov.; open circles – H. variabilis Korge.