Serromyia Meigen

Borkent, Art, 2014, The Pupae of the Biting Midges of the World (Diptera: Ceratopogonidae), With a Generic Key and Analysis of the Phylogenetic Relationships Between Genera, Zootaxa 3879 (1), pp. 1-327 : 67-68

publication ID

https://doi.org/ 10.11646/zootaxa.3879.1.1

publication LSID

lsid:zoobank.org:pub:6423894B-97D9-4286-ABB9-D4AF072B57FD

DOI

https://doi.org/10.5281/zenodo.5592995

persistent identifier

https://treatment.plazi.org/id/027587C9-BD6C-3035-FD51-1A824F24E064

treatment provided by

Felipe

scientific name

Serromyia Meigen
status

 

Serromyia Meigen View in CoL View at ENA

( Figs. 20G View FIGURE 20 , 25D View FIGURE 25 , 30A View FIGURE 30 , 36D View FIGURE 36 , 44N View FIGURE 44 , 49D View FIGURE 49 , 60C View FIGURE 60 , 74H View FIGURE 74 )

DIAGNOSIS: Only pupa of Ceratopogonidae with abdominal segment 4 sensilla L-1-IV, L-2-IV and L-3-IV close together on a rounded tubercle ( Fig. 60C View FIGURE 60 ).

DESCRIPTION: Total length = 3.10–4.19 mm. Without larval exuviae retained on abdomen. Exuviae with flagellum appressed against lateral margin of face, midleg, wing (as in Figs. 15D View FIGURE 15 , 33B View FIGURE 33 ). Ecdysial tear medial to base of antenna (as in Figs. 15D View FIGURE 15 , 79D View FIGURE 79 ). Head: Dorsal apotome ( Fig. 20G View FIGURE 20 ), without ventral line of weakness, with short dorsomedial tubercle, without central dome; dorsolateral cephalic sclerite (as in Fig. 13B View FIGURE 13 ) separated from scutum by thin cuticle, but partially fused to scutum upon emergence, each side separated medially by dorsal apotome in whole pupa; mouthparts ( Fig. 25D View FIGURE 25 ) with mandible well-developed, lacinia absent; palpus extending posterior to posterolateral margin of labium; labium entire (not divided medially); apex of antenna ( Fig. 36D View FIGURE 36 ) anterior to posterior extent of midlength portion of midleg (portion lateral to mesosternum), narrowed posteriorly; sensilla: dorsal apotomals ( Fig. 20G View FIGURE 20 )—1 short seta, 1 campaniform sensillum; dorsolateral cephalic sclerite sensilla—1–2 short setae (1 specimen with one very short, 1 elongate seta), 1 campaniform sensillum; clypeallabrals ( Fig. 25D View FIGURE 25 )—absent; oculars ( Fig. 25D View FIGURE 25 )—1 campaniform sensillum. Thorax: Prothoracic extension ( Fig. 25D View FIGURE 25 ) wide, well-developed, extending from palpus to antenna; mesonotum with short tubercles, not extending posteromedially, not dividing metathorax medially ( Fig. 49D View FIGURE 49 ); respiratory organ ( Fig. 44N View FIGURE 44 ) length/width = 2.64–4.09, moderately elongate, wide apically, somewhat flattened laterally or circular in cross-section, with pores closely abutting or slightly separated at apex of respiratory organ, arranged in single row, outer surface smooth, with short, wide pedicel, base without posteromedial apodeme, membranous base of respiratory organ moderately elongate, tracheal tube straight to slightly curved along length, with spirals restricted to base or to half length, distally with plates; wing ( Fig. 36D View FIGURE 36 ) without apical tubercle or angle, separated medially by fore-, midlegs; halter apex and hind leg (as in Fig. 33A View FIGURE 33 ) broadly abutting; halter apex abutting anterolateral knob-like extension of tergite 2; legs ( Fig. 36D View FIGURE 36 ) with lateral margin of foreleg near midlength of wing evenly curved; hind leg visible at lateral margin of wing (as in Fig. 32L View FIGURE 32 ); with apex of foreleg moderately anterior to apex of midleg; apex of hind leg abutting apex of midleg laterally; sensilla: anteromedials—1 seta; anterolaterals—1 seta; dorsal setae ( Fig. 30A View FIGURE 30 )—D-1-T, D-2-T, D-4-T, D-5-T setae, D-3-T campaniform sensillum; D-1-T, D-2-T on single tubercle, D-3-T posterior to D-4-T; supraalar 2—campaniform sensillum; metathoracics ( Fig. 49D View FIGURE 49 )—1 small seta, 2 campaniform sensilla; M-3-T near anterior margin of metathorax. Abdomen: without pigmentation pattern, segment 2 as wide or slightly wider than segment 3, segments with undivided, thin to thick setae, with rounded short tubercles, tergites or sternites entire, each without membranous disc; segment 9 ( Fig. 74H View FIGURE 74 ) not strongly modified, terminal processes closely approximated basally, each projecting posterodorsolaterally, tapering to pointed apex; sensilla: tergite 1 ( Fig. 49D View FIGURE 49 ) with 8 setae, 2 campaniform sensilla, including 4 lateral sensilla, D-2-I, D-3-I closely approximated, D- 7-I situated anterolaterally near L-1-I; segment 4 ( Fig. 60C View FIGURE 60 )—D-2-IV peg-like seta, D-3-IV short slender setae, on rounded tubercles; D-5-IV, D-8-IV short setae, D-9-IV absent; D-5-IV on short separate tubercle, D-4-IV and D-8- IV on short separate tubercle, posterior dorsal sensilla in transverse row, arranged medially to laterally: D-5-IV, D- 4-IV, D-8-IV; D-7-IV near L-1-IV; L-1-IV on rounded tubercle with L-2-IV, L-3-IV all short setae, L-4-IV on short tubercle, V-5-IV, V-6-IV, V-7-IV short setae, on rounded tubercles, V-5-IV, V-6-IV on single tubercle; segment 8 without D-3-VIII, without L-1-VIII; segment 9 ( Fig. 74H View FIGURE 74 )—with D-5-IX, D-6-IX campaniform sensilla.

DISTRIBUTION AND HABITAT: The genus Serromyia is known from 35 species from every Region worldwide other than the Neotropical Region ( Borkent & Bissett 1990; Borkent 2014 ). Species have been collected from bogs, fens, wet meadows, streams or small rivers. At least within the Holarctic Region, species are restricted to wooded areas. Strenzke (1950) and Thienemann (1950) found immatures in mosses at lake margins in Germany and Kettle & Lawson (1952) found larvae in mud associated with marshlands.

TAXONOMIC DISCUSSION: There are only two species of Serromyia known as pupae (with one of these actually of uncertain identity) ( Tables 2–3 View TABLE 2 View TABLE 3 ).

Of the five specimens of Serromyia available for study, one was of S. atra and previously studied by Borkent & Bissett (1990). It included a pharate adult, ensuring correct identification of this specimen. Of the remaining specimens, three were of pupal exuviae and one of a whole pupae, all previously slide mounted, with old, similar labels (perforated edges), with the same handwriting (likely that of Thienemann), and at least one collected by Strenzke (1950, site 220, Grosser Ukleisee, Germany), with the notation "gez." (short for gezüchtet, meaning reared). Strenzke (1950:349) noted that larvae were "not rare in damp mosses [in German]". All were previously identified as S. femorata (probably by Strenzke), even though no associated adult material was present. The pupa was young, so there were no pharate adult features to be studied. As such, there is a level of uncertainty as to both the species identification ( Borkent & Bissett 1990) as well as the generic identity. However, it appeared that all four were conspecific and Strenzke likely correctly identified the emerged adults as Serromyia , considering their distinctively fat and spinose hind femora. The pupae also matched the description of S. femorata by Kettle & Lawson (1952) and were very similar to that of S. atra , further suggesting that the generic identification of these specimens is correct.

Borkent and Bissett (1990) missed the sensillum coeloconica D-7-IV on abdominal segment 4 of the Serromyia pupa they illustrated.

MATERIAL EXAMINED: S. atra : 1 pupa, Schöhsees, Germany (ZSMC). S. femorata : 1 pupa, 2 pupal exuviae, no locality, date (likely Thienemann collection, ZSMC); 1 pupal exuviae, Grosser Ukleisee, Germany (likely Thienemann collection, ZSMC).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Ceratopogonidae

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